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单词 pivot
释义

pivotn.adj.

Brit. /ˈpɪvət/, U.S. /ˈpɪvət/
Forms: Middle English 1700s pevet, 1500s (Scottish)–1600s pivat, 1600s–1700s pevett, 1600s– pivot, 1700s pevot.
Origin: A borrowing from French. Etymon: French pivot.
Etymology: < Middle French, French pivot pivot, hinge (1338; 1174–78 in figurative use in the name of a dance), vertical main root of a fruit tree (1651), officer around whom troops wheel (1752), further etymology uncertain and disputed; perhaps compare Catalan piu spindle, pivot (14th cent.), and perhaps also Occitan pivèu pivot (a1636; compare -ellum suffix).
A. n.
1.
a. A short shaft or pin, usually of metal and pointed, forming the centre on which a mechanism turns or oscillates, as the pin of a hinge, or the end of an axle or spindle; a fulcrum. Also gen.: any physical part on which another part turns.Recorded earliest in pivot shears n. at Compounds 1.
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society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > pin or peg > on which anything turns
swivel1307
pivot1398
gudgeon1496
turning-pin1591
tampion1611
trunniona1625
pole1633
swipple1691
spill1731
millier1778
turn-pin1862
hinge-pin1881
1398 in J. Raine Testamenta Eboracensia (1836) I. 245 Testamentum constantini del damme apothecarii..Lego Ricardo Fendard..meo certa necessaria shopæ meæ pertinencia, videlicet..j holdepanne..skipscales, ij par de pevet-sheres, ij waxladyle.
1541 in J. B. Paul Accts. Treasurer Scotl. (1907) VII. 448 For bukelis, pendessis, pivatis, juncturis, nalis, chekis and uther wark of bras rasit wark to the Quenis grace harnesingis, sadillis.
1611 R. Cotgrave Dict. French & Eng. Tongues Pivot, the piuot, or (as some call it) the Tampin of a gate, or great doore.
1686 R. Boyle Free Enq. Notion Nature 305 The excited Magnetick Needle, and the Box that holds It, are duly pois'd by Means of a competent number of opposite Pivats.
1704 J. Harris Lexicon Technicum I Pevetts, are the Ends of the Spindle of any Wheel in a Watch.
1764 Philos. Trans. 1763 (Royal Soc.) 53 143 The gudgeons, or pevets, in large engines, are seldom turned true.
1805 D. Brewster in J. Ferguson Lect. I. 82 (note) The extremities of an axle or spindle,..are called gudgeons when the wheels are large, and pivots in small pieces of machinery.
1873 St. G. Mivart Lessons Elem. Anat. ii. 31 The atlas vertebra is formed to turn on the odontoid process of the axis as on a pivot.
1925 L. O'Flaherty Informer ii. 32 He walked off at his habitual slouch, with his head hanging slightly forward, hung on the pivot of his neck like a punchball.
1986 D. Carey Dreadnought vi. 153 Spock turned on his chair's pivot.
2001 Mail & Guardian (Johannesburg) 18 May 20/4 The bits of the pivot which bear the load are two steel ‘shear bushes.’
b. A dowel, a toggle. Obsolete. rare.
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society > occupation and work > equipment > building and constructing equipment > fastenings > [noun] > pin or peg
preenOE
prickOE
kevel1251
pina1275
prag1354
key1434
peg1440
tholec1440
thole-pinc1440
lock1514
cotterel1570
pivot1730
pinning1742
steady pin1791
gib1795
needle1811
lockdown1832
cotter1842
peglet1890
pushpin1903
1730 A. Gordon tr. F. S. Maffei Compl. Hist. Anc. Amphitheatres 213 The Stones..are..clasped at the Top of the Arches with Pivots or Nails.
2. Horticulture. A tapering lower stem in a plant. Cf. pivot v. 4. Obsolete.
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the world > plants > part of plant > root > [noun]
moreeOE
rootc1175
master-rootc1330
rootinga1400
radix1558
leg1597
taproot1601
top-root1651
tuberous root1668
heart-root1669
pivot1725
spill1766
tap1796
tutty-more1873
pneumatophore1891
stem root1901
heart-root1903
1725 R. Bradley Chomel's Dictionaire Œconomique at Tree If the lower or bottom part of the Stem be..thicker than all the rest, it ought ever to preserve it self in that State; but if..it continues smaller than some part a little above it, from whence in effect some fine Roots proceed; then..you must entirely cut off this smaller Part, with all its Appurtenances: Many Gardiners call it Pivot, and those Roots must only be preserv'd that proceed from the fortunate Part.
3. figurative.
a. The crucial or central point of something; that on which everything depends.
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the mind > attention and judgement > importance > [noun] > that which is important > essential or central > upon which something depends
harrec1000
pina1538
key1559
pinch1581
axle-treec1600
axlea1634
fulcrum1668
keystone1722
pivot1748
turning-point1836
landmark1859
axis1860
linchpin1954
1748 S. Richardson Clarissa III. xx. 121 I frequently turned his principals about upon a pivot of my own, unknown to themselves.
1788 J. Madison Federalist Papers lxiii. 196 The difference most relied on between the American and other republics, consists in the principle of representation, which is the pivot on which the former move.
1818 Cobbett's Weekly Polit. Reg. 33 594 The paper-money is the pivot, on which their all turns.
1888 J. Bryce Amer. Commonw. II. xliv. 151 In all States, the Governor..may at any moment become the pivot on whose action public order turns.
1920 D. H. Lawrence Women in Love xxx. 491 She felt strange and inevitable, as if she were centered upon the pivot of all existence, there was no further reality.
1996 W. Hutton State we're In (rev. ed.) x. 263 The pivot on which the German system turns..is the patience of the banks.
b. spec. A device in classical Japanese poetry, and subsequent literary forms such as linked verse, drama, and prose fiction, involving the use of a pun which implies one meaning with the words preceding it, and another with those following. More fully pivot-pun. Cf. pivot word n. 2.
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society > leisure > the arts > literature > poetry > other aspects or elements > [noun] > pun in Japanese poetry
pivot-pun1877
the mind > mental capacity > understanding > intelligence, cleverness > wit, wittiness > wit with words > [noun] > play on words, pun > in Japanese poetry
pivot1877
1877 B. H. Chamberlain in Trans. Asiatic Soc. Japan 5 86 A more complicated species of pun, occurring when a word with two meanings is used only once as a sort of pivot on which two wheels turn. In this case, the first part of the poetical phrase has no logical end, and the latter part no logical beginning.]
1877 B. H. Chamberlain in Trans. Asiatic Soc. Japan 5 87 An example of what might be termed pivot-puns.
1880 B. H. Chamberlain Classical Poetry of Japanese Introd. 4 The ‘Pivot’ is a more complicated device, and one which, in any European language, would be not only insupportable, but impossible, resting, as it does, on a most peculiar kind of jeu de mots.
1967 R. A. Miller Japanese Lang. 1980 302 Chikamatsu has examples of phrases as long as 13 or 14 syllables which serve as pivots in their entirety, and some of these are even employed not only on two but on three different semantic levels simultaneously.
1998 Re: Beepers or Pagers? in alt.usage.english (Usenet newsgroup) 23 May A tanka usually breaks into two units, the first three lines forming one unit and the last two lines forming another... The middle line can be a ‘pivot’; that is, the middle line can be read with either the first two or last two lines.
c. Sport. A player in a central position; the position itself.
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society > leisure > sport > types of sport or game > ball game > characteristics of team ball games > [noun] > players or positions
wing-back1734
goalkeeper1789
outfielder1855
quarter1857
centre fielder1865
outfield1867
quarterback1867
right1867
centre1868
left wing1871
left-back1873
left half-back1873
centre forward1874
left-centre1877
right-centre1877
centre back1878
centre half-back1879
forward1879
back1880
right wing1880
right half-back1881
goaltender1882
right-winger1882
wing1882
centre half1884
left winger1884
inside1886
half1887
custodian1888
left half1888
midfielder1888
left wing1889
right half1889
centreman1890
midfield1890
outside right1890
outfieldsman1891
goalie1894
winger1896
infield1897
inside forward1897
inside right1897
outside forward1897
outside1898
outside left1900
rearguard1904
pivot1911
wing-man1942
keeper1957
link1958
linkman1963
midfield1976
1911 Hartley Coll. Mag. 12 xxxiii. 48 Howarth was moved from outside left to centre, but it was obvious..he would be spoilt if retained as pivot.
1930 Daily Express 6 Oct. 16/5 Wilson, the Huddersfield pivot, was kept mainly on the defensive.
1974 Plain Dealer (Cleveland, Ohio) 26 Oct. 4- d/1 In the pivot Steve Patterson and Jim Chones totalled 13 boards.
1975 Oxf. Compan. Sports & Games 66/1 The tallest players of all, playing near the basket, are called pivots, centres, or posts.
2004 Rugby World Feb. 133/4 It remains a mystery why the Whitchurch pivot has yet to attract the attention of any national selectors.
d. = pivotal man n. at pivotal adj. and n. Compounds.
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society > armed hostility > warrior > soldier > soldier by type of service > [noun] > soldier nearing end of service > man liable for early release
pivotman1782
pivotal1918
pivotal man1918
pivot1919
1919 Punch 29 Jan. 76/2 They are keeping all the pivots in this area for one final orgy of demobilisation at some future date.
1919 Punch 12 Mar. 200/3 A pivot so well-paid and prized Just had to be demobilised.
e. Mathematics. A non-zero element which is used as the basis of calculations during the numerical evaluation of a determinant or matrix, or the numerical solution of simultaneous linear equations (see note). Cf. pivotal adj. 2.The pivot of a determinant or matrix is used as follows: all elements in its row are divided by it, and appropriate multiples of that row are then subtracted successively from the other rows, so that the pivot itself is replaced by unity and all other elements in its column are replaced by zero; this gives a number, the pivot, multiplied by a determinant whose order is reduced by one. In the case of simultaneous equations, the pivot is the coefficient of a particular unknown in one equation. Both sides of this equation are divided by the pivot, so that the coefficient of that unknown becomes unity. Appropriate multiples of the equation are then subtracted from the other equations, resulting in a set of equations one fewer in number, from which the unknown in question has been eliminated.
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the world > relative properties > number > mathematical number or quantity > numerical arrangement > [noun] > array > matrix > operation or result of > determinant > non-zero element or use of
pivot1933
pivoting1961
total pivoting1968
1933 Proc. Edinb. Math. Soc. 3 211 At Stage II we choose another pivot at will..and cross-multiply with respect to it in the same way, dividing each result, however, by the previous pivot, 5.
1940 Brit. Jrnl. Psychol. 30 363 The determinant is condensed in the manner already shown (each pivot being converted into unity) until it is reduced to one number.
1973 G. M. Phillips & P. J. Taylor Theory & Applic. Numerical Anal. viii. 197 The fault in the first attempt at solving Example 8.6 was that a small pivot (the coefficient of x in the first equation), meant that very large multiples of the first equation were added to the others, which were therefore ‘swamped’ by the first equation, after rounding.
1991 N. Higham in C. Bondi New Applic. Math. ii. 43 Immediately we hit a problem—our pivot for the next stage, the (2,2) element, is zero.
f. Linguistics. = pivot word n. 3.
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the mind > language > [noun] > language acquisition > terms relating to
polysyllabism1859
pivot1963
pivot word1963
pivot class1964
pivot grammar1970
1963 M. D. S. Braine in Language 39 4 There is a basis for defining two primitive word classes: a class of pivots..to which a few frequently occurring words belong, and a complementary class which has many members, few of which recur in more than one or two different combinations.
1971 Jrnl. Speech & Hearing Disorders 36 44 Rules that account for utterances in terms of the juxtaposition of pivots and open words cannot account for differences in semantic interpretation.
1975 Canad. Jrnl. Linguistics 20 220 Arabic children have a much easier time of it than English children since such Pivot—Open constructions are generally well-formed sentences in adult grammar.
1997 E. Lanza Lang. Mixing in Infant Bilingualism iv. 117 The pivot class was a small one containing words of high frequency in the child's speech. These items were referred to as 'pivots' since the child appeared to attach other words to them as in book on, cookie on, box on.
4. Military. The officer or soldier about whom a body of troops wheels; the flank by which the alignment or dressing is corrected.A pivot may be fixed or movable during such a manoeuvre: see quot. 1832.
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society > armed hostility > warrior > soldier > soldier who practises drill or evolution > [noun] > one who practises wheeling
pivot1782
pivotman1782
pivot leader1788
wheeler1798
1782 W. Dalrymple Tacticks (new ed.) 45 The whole should follow, file by file, from the pivot outwards.
1796 Instr. & Regulations Cavalry 51 When the squadron has wheeled to a flank by divisions.—If to the right, then the left officer is on the pivot of the rear division, and the right officer shifts to the pivot of the front division.
1832 Proposed Regulations Cavalry iii. 47 Pivot—The outward man on that flank of a Squadron or smaller body upon which that body turns in wheeling... Fixed Pivot—Is when the flank man during a wheel turns upon his own ground. Moveable Pivot—Is when the flank man during a wheel describes a portion of a circle.
1859 F. A. Griffiths Artillerist's Man. (1862) 141 A battery can..change front on a moveable pivot by a simple wheel.
1860 Vol. Cav. Movement in Blackwood's Mag. Mar. 371/1 ‘When Right is in front, Left is the Pivot.’ This is the first thing taught to the Cornet.
1933 H. Allen Anthony Adverse III. viii. lviii. 939 The leading squadron wheeled on a right pivot, drew sabres and charged.
5. Gunnery. The nipple of a percussion lock. Obsolete.
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society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > parts and fittings of firearms > [noun] > lock > nipple
nipple1822
spill1823
pivot1835
1835 Encycl. Brit. XI. 39/1 The next peculiarity of the ordinary detonating lock is the pivot or nipple.
1836 T. Oakleigh Oakleigh Shooting Code 18 The pivot is the nipple or cone of iron screwed into the breach, and on which the copper cap is placed.
6. A pivoting movement, a rapid turn on the spot; (Basketball) a permissible manoeuvre in which the player holding the ball takes one or more paces in any direction with one foot, while keeping the other (the pivot foot) in fixed contact with the floor. Cf. pivot foot n. at Compounds 3.
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society > leisure > sport > types of sport or game > ball game > basketball > [noun] > actions
travelling1916
pivot1920
rebounding1926
dunking1935
goaltending1939
boxout1950
rebound1954
screen-and-roll1955
pick-and-roll1960
suicide1965
hang time1969
steal1974
1920 H. Frost & C. D. Wardlaw Basket Ball & Indoor Baseball for Women iv. 27 The pivot may be taken on the ball or heel of the foot, but the foot must remain in place.
1941 J. Naismith Basketball 66 Closely allied with the dribble is the pivot.
1950 S. Thompson Old Time Dancing (1951) i. 18 Pivoting or the Pivot is a movement obtained by turning on the ball or the heel of one or both feet.
1990 Sports Illustr. 18 June 74/3 Ripken..plays shortstop, which means he must make the pivot at second.
1994 Sports Illustr. 26 Dec. 32 He has got the whole point guard package..the stop-and-go dribble, the knack for splitting defenders at precisely the right moment, the jab step, the pivot under pressure.
2004 Orange County (Calif.) Register (Nexis) 21 June Adult male bats were making their expert dives and pivots and turns.
B. adj. (attributive).
That is the pivot on which something turns or depends; pivotal. Now rare.
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the mind > attention and judgement > importance > [adjective] > essential or central
cardinal1440
material1603
primal1619
real1620
centrical1659
vital1659
essential1770
nucleal1826
key1832
pivotal1837
keystone1846
pivot1861
quintessential1901
central1902
core1962
1861 E. Garbett Boyle Lect. 247 Heathenism fixed itself upon these pivot qualities of the heart.
1875 E. Poste tr. Gaius Institutionum Iuris Civilis (ed. 2) i. Introd. 2 Some of the pivot terms and most pervading conceptions.
1941 Nevada State Jrnl. 25 Oct. 9/1 Pivot issues carry market to high level... Stocks today spurted fractions to 2 points under the lead of pivotal issues to the best general level since October 14.

Compounds

C1. (In sense A. 1a.)
pivot gauge n.
ΚΠ
1867 Sci. Amer. 23 Nov. 327/2 (heading) Pivot gage, staff and frame for millstones.
1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 199 Pivot Gauge, a steel plate with tapered slit for measuring pivots.
1996 Re: Tips on Newbie Equipm. Wanted in rec.scuba.equipment (Usenet newsgroup) 1 July Basic pivot gauges are OK.
pivot hole n.
ΚΠ
1667 R. Hooke Doc. 21 Mar. in T. Birch Hist. Royal Soc. (1756) III. 159 Putting..the two other opposite pivots into the pivot-holes.
1773 Philos. Trans. (Royal Soc.) 63 77 My clock is in general of the plain kind, moving in brass pivot-holes, beating dead seconds, with the common steel paletts.
1851 H. Melville Moby-Dick I. xxviii. 196 Captain Ahab stood erect... He was every day visible to the crew; either standing in his pivot-hole, or seated upon an ivory stool.
1999 Clocks Dec. 34/1 The back pivot hole for the hands motionwork is the only one in the frame bars which is not brass bushed. Does any reader recognise this clock?
pivot lathe n.
ΚΠ
1866 Sci. Amer. 28 Dec. 288/2 A watchmaker's pivot lathe.
1882 Century July 15/2 Here is a girl at work with a tiny lathe, called the automatic staff or pivot lathe.
1997 FS: Jacot Pivot Lathe in rec.crafts.metalworking (Usenet newsgroup) 30 Dec. Watchmaker's Jacot Pivot Lathe. Used to reduce the thickness of small pivots on watch gears.
pivot pin n.
ΚΠ
1851 Sci. Amer. 3 May 262/2 We claim the construction of the stretching apparatus, by connecting the free rod to the clamp, by entering the end or tenon of the rod into a mortise with angular sides, and securing them together by a pivot pin.
1884 Instr. Mil. Engin. (ed. 3) I. ii. 58 A plate round the point or thin end, with a hole for the pivot pin.
1992 Guns Illustr. (ed. 24) 90/1 The shape of the trigger is better, with less curl at the tip; the trigger and the bolt latch now have separate pivot pins.
pivot polisher n.
ΚΠ
a1884 E. H. Knight Pract. Dict. Mech. Suppl. 686/2 Pivot Polisher, an attachment to the watchmaker's lathe. It is used for grinding and polishing conical pivots, snailing and drilling.
1948 Portland Press Herald 17 May 4/1 Lapping machines, pivot polishers, Bench Grinder, [etc.].
1997 WTB Lavin or D Size 10mm Collets in alt.horology (Usenet newsgroup) 25 Nov. I would like to buy a set of collets, pivot polisher, 3 jaw chuck, or any thing else that would fit this lathe.
pivot shears n.
ΚΠ
1398 [see sense A. 1a].
2004 www.hill-loma.com 15 Apr. (O.E.D. Archive) Hydraulic & mechanical pivot shears.
C2. (In sense A. 4.)
pivot flank n.
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society > armed hostility > armed forces > the Army > part of army by position > [noun] > wing or flank
wingc1400
horn1533
out-wingc1540
flank1548
point1550
sleeve1574
left1693
right1694
pivot flank1786
reverse flank1792
wheeling flank1796
1786 Gen. Regulations & Orders His Majesty's Forces 33 They must incline to the Left, in such Manner, as that the Pivot Flanks of the Whole may cover.
1833 Regulations Instr. Cavalry i. i. 38 They resume their places on the pivot flank.
1981 B. Fosten Wellington's Infantry 27 When ‘Dress’ was given, eyes turned up to the pivot flank, where the platoon commander stood and corrected the line.
pivot leader n. Obsolete
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society > armed hostility > warrior > soldier > soldier who practises drill or evolution > [noun] > one who practises wheeling
pivot1782
pivotman1782
pivot leader1788
wheeler1798
1788 D. Dundas Princ. Mil. Movements 35 Though the distant point may not be seen or known by the pivot leaders, yet the mounted officers..are known by every one to be there placed for the purpose of marching or forming upon.
1796 Instr. & Regulations Cavalry 24 The pivot leader..will begin in his own person to circle behind the line from the old, so as to enter the new direction twenty or thirty yards from the point of intersection.
pivot officer n. Obsolete
ΚΠ
1788 D. Dundas Princ. Mil. Movements 72 The pivot officers and men, take care to cover exactly in a line from front to rear of the column.
1796 Instr. & Regulations Cavalry 59 In movements in column, the pivot officers..are answerable for covering, and for proper wheeling distances.
C3.
pivot bearing n. a bearing that sustains the foot of a vertical shaft or spindle; = footstep n. 6c.
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society > occupation and work > equipment > machine > parts of machines > shaft > [noun] > parts of > support or bearing
headstock1688
brass1731
bearing1734
carriage1788
step1814
bearance1826
footstep1836
cod1839
pivot bearing1851
roller bearing1857
thrust-bearing1858
step-plate1869
thrust-bearer1869
needle bearing1870
journal-bearing1875
wall-bearing1875
plain bearing1893
tumbler-bearing1901
split bearing1902
sleeve bearing1907
thrust-box1918
taper roller bearing1930
1851 Sci. Amer. 20 Dec. 106/3 Through the front end of the frame of the tender, I would insert a stout screw running down into a pivot bearing on the timber spoken of.
1925 Proc. Royal Soc. A. 108 155 These pulleys are provided with pivot-bearings of hardened steel.
1994 Bowhunting World Feb. 58/2 The Ballistic Mirage uses semi-cylindrical limb pivot bearings which are doweled into the face of the limb butts.
pivot bolt n. the central bolt about which a pivot gun oscillates horizontally.
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society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > gun carriage > [noun] > swivel
swivel1697
pivot bolt1848
pivot frame1857
1848 Sci. Amer. 16 Dec. 97/3 This lever is united to the frame by pivot bolts CCCC, and it is jointed in the middle by a pivot B.
1970 Which? Mar. 85/2 Most of the shears were weighted so that the balance point was roughly around the pivot bolt.
1994 R. Moody Dry Divide xii. 150 The pivot bolt would make it possible to turn sharp corners, and the hinges would allow each wagon to be tilted separately on the elevator rocker.
pivot break n. Rugby rare a move in which a scrum breaks on the side the ball was put in.
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society > leisure > sport > types of sport or game > ball game > football > rugby football > [noun] > actions or manoeuvres
scrimmaging1776
throw on1845
rush1857
catch1858
maul1860
touch1863
mauling1864
touch-in-goal1869
goal-kicking1871
throw-forward1871
sidestepping1877
handing1882
punting1882
heel1886
touch kicking1889
forward pass1890
scrumming1892
touch-finding1895
heeling1896
wheel1897
scrag1903
reverse pass1907
jinka1914
hand-off1916
play-the-ball1918
gather1921
pivot pass1922
sidestep1927
smother-tackle1927
stiff-arm1927
heel-back1929
scissors1948
rucking1949
loose scrummaging1952
cut-through1960
pivot break1960
put-in1962
chip kicking1963
box kicking1971
peel1973
chip and chase1976
tap penalty1976
1960 E. S. Higham & W. J. Higham High Speed Rugby 70 Another way..is to break on the side of the scrum on which the ball was put in. This is sometimes called the ‘pivot’ break, because the scrum-half pivots around his outside foot.
pivot bridge n. a swing bridge pivoted on a central pier.
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society > travel > means of travel > route or way > other means of passage or access > [noun] > bridge > swing-bridge
swinging-bridge1708
swivel-bridge1754
turn-bridge1767
swing-bridge1791
pivot bridge1795
turning bridge1840
1795 A. W. Radcliffe Journey made in Summer 1794 2 The dockyard bounds the sluice and the town, communicating with the former by gates, over which a small pivot bridge connects the two sides of the street.
1875 E. H. Knight Amer. Mech. Dict. III. 1721/2 A pivot-bridge of the New York Central Railway on the Linville principle.
1998 Sun Fun Bk. (Baltimore) Spring–Summer 28/3 Susquehanna Museum..includes restored 1840 lock tender's house, with period furnishings, and lock with pivot bridge of the Susquehanna and Tidewater Canal.
pivot broach n. a boring tool used in watchmaking to enlarge pivot holes.
ΚΠ
1875 E. H. Knight Amer. Mech. Dict. III. 1721/2 Pivot-broach, a..tool for opening the pivot-holes of watches.
1996 Watch Repair Equipm. in rec.antiques.marketplace (Usenet newsgroup) 15 May Pivot broach set.
pivot class n. Linguistics the class of pivot words (pivot word n. 3).
ΘΚΠ
the mind > language > [noun] > language acquisition > terms relating to
polysyllabism1859
pivot1963
pivot word1963
pivot class1964
pivot grammar1970
1964 Amer. Psychologist 19 3/2 Two classes of words appear—a pivot class and an open class—and the child launches forth on his career in combinatorial talking.
1997 E. Lanza Lang. Mixing in Infant Bilingualism iv. 117 A pivot grammar comprised two basic categories or classes: the pivot class and the open class. The pivot class was a small one containing words of high frequency in the child's speech.
pivot drill n. (a) a military training exercise involving a pivoting motion (cf. sense A. 4); (b) = pivot broach n.
ΚΠ
1866 Times 28 May 12/5 The new ‘pivot’ drill was also performed by each of the regiments.
1868 Times 26 Mar. 9/4 The 4th (Royal Irish) Dragoon Guards, under Colonel Shute, were exercised in the pivot drill in the Long Valley.
1893 Manufacturer & Builder Oct. 229/2 (heading) The ‘Mascot’ Pivot Drills.
1997 FS: Watchmakers Drill Press in alt.horology (Usenet newsgroup) 11 Apr. Precision drill press consisting of 24 magic pivot drills, 2 drill holders, spring wire belting, [etc.].
pivot file n. (a) Military the file of soldiers instrumental in moving or changing the course of a body of troops; (b) a metal file used for making watch pivots.
ΚΠ
1782 W. Dalrymple Tacticks (new ed.) 72 (note) The Pivot file is that file of each division in the line of direction on which the column is to march; the hinge on which it is to turn from line into column, or from column into line.
1833 Regulations Instr. Cavalry i. i. 38 The pivot files of the front rank face to the left.
1869 Sci. Amer. 18 Sept. 182/2 It requires a little practice to get used to working the bow, and the pivot file, in opposite directions..but, when familiar with the operation, pivots are easily speedily polished.
1949 H. B. Fried Watch Repairer's Man. ix. 155 Care should be exercised that the pivot file or burnisher be held against the pivot.
c1985 L. Penman Clock Repairer's Handbk. iv. 49 It is not necessary to soften..because the pivot file is quite capable of removing the small amount of metal needed to expose a clean surface once more.
2004 M. Smith Kingdom River 72 Then First Squadron began to wheel in stately turn to the left, ranks in good order as the pivot files slowed.
pivot foot n. Sport the foot that stays in fixed contact with the floor during a sporting manoeuvre, esp. when executing a pivot in basketball (cf. sense A. 6).
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society > leisure > sport > types of sport or game > ball game > basketball > [noun] > specific part of player
pivot foot1896
1896 Washington Post 14 Dec. 8/5 It is almost impossible for the umpire to see from behind the bat whether the twirler's pivot foot is on the rubber.
1954 Basketball (rev. ed.) 12/1 The pivot foot may be lifted to pass or shoot provided the ball is released before the foot touches the ground again.
2002 Arizona Republic (Nexis) 6 Oct. 4 f On an agile pivot foot, he repeatedly embarrassed Oregon's defenders, especially at the corners.
pivot frame n. Gunnery Obsolete a frame turning on a pivot so that the gun it carries may be pointed in any direction.
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society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > gun carriage > [noun] > swivel
swivel1697
pivot bolt1848
pivot frame1857
1857 Times 3 Jan. 5/6 The piece..is mounted upon a carriage which bears a general resemblance to that of an ordinary 6-pounder field gun, but which embraces a pivot frame and recoil slide.
pivot-gearing n. Mechanics Obsolete gearing in which the axis of rotation of a driving wheel can be shifted, so that the machine being driven can be positioned at various angles.
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1867 Sci. Amer. 28 Dec. 404/2 Pivot Gearing... I claim the circular bed, A, in combination with the pinion plate, B, and coupling plate, C.
1890 Cent. Dict. Pivot-gearing.
pivot grammar n. Linguistics (a) grammar postulating the existence of two word classes in early infant speech, pivot words and a larger open class (cf. pivot class n.).
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the mind > language > [noun] > language acquisition > terms relating to
polysyllabism1859
pivot1963
pivot word1963
pivot class1964
pivot grammar1970
1970 L. M. Bloom Lang. Devel. 24 The speech of children described in pivot grammars in other investigations.
1984 Language 60 470/2 To deal with the early development of grammar, S resurrects pivot grammar in a less restrained form than its previous incarnation.
1998 D. P. O'Brien in M. D. S. Braine & D. P. O'Brien Mental Logic i. 2 Marty [Braine]..identified regularities in collocation and proposed accounting for these in terms of a simple set of grammatical rules (including his influential pivot grammar).
pivot gun n. Gunnery a gun which turns freely on a pivot to point in any direction.
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society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > piece of artillery > [noun] > swivel-gun
swivel-gun1712
swivel1748
wall-piece1755
jingal1761
zamburak1825
pivot gun1831
1831 Times 18 Oct. 3/4 The only description of the pirate vessel given is, that she..carried 10 large guns (similar to those of a sloop of war) on each side, and 2 pivot guns, one amidships and one forward.
1922 Jrnl. Negro Hist. 7 410 There were also two corps of militia... These had charge of the fifteen large carriages and three small pivot guns.
1998 Jrnl. Mil. Hist. 62 629 Semmes commented on his faulty powder and also on the ‘awful disparity’ between his own guns and Kearsarge's powerful 11-inch pivot guns.
pivot joint n. a joint in which the movement of the parts is that of a pivot.
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the world > life > the body > structural parts > joint > types of joint > [noun]
seamc1050
commissure?a1425
arthrodia1565
commissary1577
gomphosis1578
inarticulation1578
suture1578
symphysis1578
synarthrosis1578
adarticulation1615
harmony1615
synchondrosis1615
enarthrosis1634
harmonia1657
mortise-articulation1658
ball and socket1664
synneurosis1676
syssarcosis1676
ginglymus1678
syndesmosis1726
ginglymus1733
hinge-joint1802
screw-joint1810
schindylesis1830
amphiarthrosis1835
pivot joint1848
synosteosis1848
synostosis1848
indigitation1849
screwed-surfaced joint1875
thorough-joint1889
1848 Sci. Amer. 24 June 313/3 I, is a large lever shaft keyed on to the axle H, by K, a pivot joint.
1881 St. G. Mivart Cat iv. 122 The last kind of joint to be noticed is that called a pivot-joint, an example of which is furnished by the two uppermost bones of the neck. Here one bone serves as an axis or pivot on which the other can rotate.
1993 J. A. Hufnagel Stanley Compl. Step-by-Step Bk. of Home Repair & Improvement i. i. 13 A folding rule..has a number of segments hinged together with metal pivot joints.
pivotman n. (a) = sense A. 4 (also figurative); (b) Sport a player in a central position (cf. sense A. 3c).
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the mind > attention and judgement > importance > [noun] > one who is important > one who is essential or has central role
Atlas1589
keystone1641
protagonist1671
firmament1701
leading light1707
pivotman1782
kingpin1858
queen-pin1907
society > armed hostility > warrior > soldier > soldier who practises drill or evolution > [noun] > one who practises wheeling
pivot1782
pivotman1782
pivot leader1788
wheeler1798
society > armed hostility > warrior > soldier > soldier by type of service > [noun] > soldier nearing end of service > man liable for early release
pivotman1782
pivotal1918
pivotal man1918
pivot1919
society > leisure > sport > player or sportsperson > [noun] > team or group > member of > with specific function
pivotman1782
engine room1897
swing man1903
match-winner1908
starter1911
screener1923
playmaker1931
point man1951
1782 W. Dalrymple Tacticks (new ed.) 109 The pivot men march on; the men of the front rank face inwards.., close to the pivot, and move on.
1814 Manœuvring iii. i, in J. Galt New Brit. Theatre II. 101 Ever since..you have been our lady's pivot-man: every thing turns on you.
1899 Century Jan. 472/1 The pivot-man of the second platoon turned sharply to the left, and started up the street without waiting for the gate to swing around.
1967 Boston Sunday Herald 9 Apr. (This Week Mag.) 4/3 Locate the ‘pivot man’ on each team—he's the fielder who makes the first move as the team adjusts position for each new batter.
2004 N.Y. Sun (Nexis) 17 Feb. 15 Neither was a star in that game, and both have spent their careers as backup pivotmen.
pivot pass n. Rugby and Basketball a move in which a player pivots to pass the ball.
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society > leisure > sport > types of sport or game > ball game > football > rugby football > [noun] > actions or manoeuvres
scrimmaging1776
throw on1845
rush1857
catch1858
maul1860
touch1863
mauling1864
touch-in-goal1869
goal-kicking1871
throw-forward1871
sidestepping1877
handing1882
punting1882
heel1886
touch kicking1889
forward pass1890
scrumming1892
touch-finding1895
heeling1896
wheel1897
scrag1903
reverse pass1907
jinka1914
hand-off1916
play-the-ball1918
gather1921
pivot pass1922
sidestep1927
smother-tackle1927
stiff-arm1927
heel-back1929
scissors1948
rucking1949
loose scrummaging1952
cut-through1960
pivot break1960
put-in1962
chip kicking1963
box kicking1971
peel1973
chip and chase1976
tap penalty1976
1922 N.Y. Times 18 Dec. 20/4 The inventor of the pivot pass and the short pass which has come into almost universal use and which has revolutionized the game.
1959 Times 6 July 4/3 Aggravated by Mulligan's excessive affection for a wheeling pivot pass, Thomas at stand-off half handicapped himself and the three-quarters still further by standing to take his passes.
1960 E. S. Higham & W. J. Higham High Speed Rugby 68 You will have to pivot round on the outside foot as you take off. This is called the ‘pivot’ or ‘reverse’ pass.
2004 Philadelphia Inquirer (Nexis) 21 Mar. The rookie then made a nice pivot pass from behind the net to Lapointe.
pivot point n. a pivotal point (literal and figurative); (formerly) spec. †a point of reference for a wheeling body of troops (cf. sense A. 4).
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1788 D. Dundas Princ. Mil. Movements 80 As there are so many determined pivot points given, it becomes easy to dress correctly a platoon or a battalion.
1855 U.S. Rev. June 448 The island of Cuba is..the pivot-point on which turn four questions of great moment to this country.
1993 R. J. Pond Introd. Engin. Technol. (ed. 2) vii. 178 Sometimes vibration is purposely introduced at a pivot point to eliminate stiction.
pivot-pricker n. Obsolete a slender pointed instrument for clearing the nipple of a percussion lock.
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society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > equipment for use with firearms > [noun] > instruments for cleaning other parts
pivot-pricker1836
vent-bit1846
1836 T. Oakleigh Oakleigh Shooting Code 106 Articles necessary to the grouse-shooter's equipment..; fowling-piece, in case or bag; two extra pivots; a pivot-pricker; pivot-wrench.
pivot-pun n. see sense A. 3b.
pivot ship n. the ship used as a reference point by a fleet when moving or changing course in formation; also figurative.
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society > travel > travel by water > vessel, ship, or boat > war vessel > [noun] > ship round which other ships pivot
pivot ship1856
1856 Times 17 Apr. 12/3 After attaining the pivot-ships Duke of Wellington and Royal George..the Red squadron rounded the latter.
1867 W. H. Smyth & E. Belcher Sailor's Word-bk. Pivot-ship, in certain fleet evolutions, the sternmost ship remains stationary, as a pivot on which the other vessels are to form the line anew.
2004 premier.shanky.com 15 Apr. (O.E.D.Archive) Majorum is the offensive leader of Liquid Inc and tends to make the plays and play as the pivot ship.
pivot span n. that span of a bridge which turns or opens on a pivot.
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1870 O. Chanute Kansas City Bridge 118 (table) Timber in..pivot span.
1935 Lima (Ohio) News 23 Dec. 2/1 Captain McNair, standing on the open pivot span looking down stream as a tug and its barge tow started thru, heard the bus crash thru the guard rail.
2002 Daily Town Talk (Alexandria, Los Angeles) (Nexis) 16 May 5 b Now that the river is down again, work is being pushed in pulling out the false work which was used in erecting the pivot span of the traffic bridge.
pivot tooth n. Dentistry an artificial crown attached to a tooth by means of a dowel inserted into the root canal.
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the world > health and disease > healing > dentistry > [noun] > a restoration > crown
crown1781
pivot tooth1842
crown cap1876
jacket crown1891
post crown1905
three-quarter veneer1924
veneer crown1927
veneer1930
1842 in C. R. E. Koch Hist. Dental Surg. I. 269 In 1811 after I came to the United States I saw a pivot tooth which had been sent by Dr. Kuhn.
1909 in C. R. E. Koch Hist. Dental Surg. I. 258 Many pivot teeth were removed at the patient's will for the purpose of cleansing.
1994 New Yorker 19 Sept. 79/3 I had a pivot tooth—a false tooth—which immediately came out.
pivot transom n. Gunnery Obsolete the front component of the chassis of a casemate gun.
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1875 E. H. Knight Amer. Mech. Dict. III. 1721/2 A traversing platform passing through the pivot transom and the front sleeper of the platform.
pivot wrench n. Obsolete a small turning tool for securing or loosening the nipple of a percussion lock to and from the barrel; = nipple wrench n. at nipple n. Compounds 1b.
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society > armed hostility > military equipment > weapon > device for discharging missiles > firearm > equipment for use with firearms > [noun] > tool for (un)screwing nipple
pivot wrench1836
nipple wrench1844
1836 T. Oakleigh Oakleigh Shooting Code 106 Articles necessary to the grouse-shooter's equipment..; fowling-piece, in case or bag; two extra pivots; a pivot-pricker; pivot-wrench.
1857 E. J. Lewis Amer. Sportsman (new ed.) 383 (heading) Nipple or Pivot-wrench.
1880 Indiana (Pa.) Weekly Messenger 22 Sept. 2/6 Game Bags, Wiping Sticks, Pivot Wrenches, [etc.].
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online June 2022).

pivotv.

Brit. /ˈpɪvət/, U.S. /ˈpɪvət/
Origin: Formed within English, by conversion. Etymon: pivot n.
Etymology: < pivot n. Compare Middle French pivoter to fidget (1508), French pivoter to put (a door) on a pivot or hinge (1611 as pivotter in an apparently isolated attestation), (of a tree root) to grow vertically downwards (1652), to turn on, or as if on, a pivot (1812; 1829 of troops).
1. intransitive. To turn on, or as if on, a pivot; (Military) to swing round a central point during a manoeuvre. Also figurative: to depend on, to hinge on.
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society > armed hostility > military operations > evolution > [verb (intransitive)] > other evolutions
front1635
ploy1836
pivot1841
about-face1863
the world > existence and causation > causation > effect, result, or consequence > result [verb (intransitive)] > depend
depend1413
rest1530
penda1540
stay1549
to consist by1567
consist1588
suspend1608
to roll on ——1707
hinge1719
pivot1872
the world > space > direction > point or lie in a direction [verb (intransitive)] > turn round or to face a direction > turn (as) on a pivot or swing round
turnOE
revirec1485
virec1485
circumlate1578
swing1769
slew1823
swivel1846
pivot1883
jib1891
1841 C. J. Lever Charles O'Malley xc, in Dublin Univ. Mag. June 755/2 The seventh..took up their ground at Frenada, pivoting upon the first division.
1872 H. W. Beecher in Christian World Pulpit 2 250 You know that Christ's ministry was pivoting upon Capernaum.
1883 ‘Holme Lee’ Loving & Serving II. ix. 154 ‘No’, said the clergyman, and pivoted on his heel.
1967 G. Steiner Lang. & Silence 418 A major part of western literature pivots on a sense of irreplaceable personal identity.
1977 ‘J. le Carré’ Honourable Schoolboy iii. xiii. 287 She went on chattering, pivoting to talk to him, one arm held wide of her body, palm upward, like a fashion model.
2002 Cigar Aficionado Jan. 113/2 The case, which pivots on a gold frame.., can also be turned over, showing the transparent sapphire crystal back.
2. transitive. To provide with a pivot; to mount on, or attach by means of, a pivot or pivots; to hinge. Chiefly in passive. Also figurative.
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the mind > attention and judgement > importance > [verb (transitive)] > be essential
pivot1842
society > occupation and work > industry > working with tools or equipment > fastening > fasten [verb (transitive)] > with pins or pegs > with specific type
thorn1605
poniard1620
dowel1712
toggle1836
pivot1842
safety-pin1892
1842 Penny Cycl. XXIV. 148/2 This machine [sc. a polygrammatic telegraph]..consisted of four posts, at the top of each of which was pivoted a pair of arms. Each pair of arms was capable..of forming more than a sufficient variety of distinct signals to express any of the numerals or the 0.
1851 Fraser's Mag. 44 472 There is not a man..whose moral and mental centre of gravity more firmly pivot the violent oscillations and gyrations of his ‘passionate’ energy.
1869 E. J. Reed Shipbuilding xx. 454 To have the model pivoted at the ends.
1878 R. H. Hutton Scott x. 101 Scott's romances..are pivoted on public rather than mere private interests.
1945 C. E. Balleisen Princ. Firearms vi. 66 The ejector..is a curved member pivoted to the side of the receiver.
1988 Road & Track Nov. 47/1 This has made it possible to pivot the new alloy lower arms on bushings calibrated to give some fore-aft compliance for the suspension.
3. transitive. To turn or swing (a person or thing) as on a pivot.
ΚΠ
1853 E. C. Gaskell Cranford xiii The young men..had on their best looks..and pivoted themselves over the counter with surprising activity.
1896 H. James Amer. Writers xxxi. 460 His concern is..to pivot them round and show the odd little stamp or sign that gives them their value for the collector.
1940 Life 30 Sept. 93/1 [He] feigned insanity. He mumbled, shadowboxed with imaginary little men, loosely pivoted his neck as if trying to shake something off.
1988 B. Chatwin Utz 19 Kaspar pivoted the figurine in the flickering candlelight.
2001 Chicago Sun-Times (Nexis) 10 Aug. 150 As Michael Finley slowly stretched out his muscular torso face-down while pivoting himself on a miniature rolling device, the veins in his face, arms and shoulders bulged profoundly.
4. intransitive. Horticulture. Of a plant root: to grow vertically downwards. Cf. pivot n. 2. Obsolete.
ΚΠ
1895 New Sydenham Soc. Lexicon (at cited word) In Bot., a main root which grows vertically downwards is spoken of as ‘pivoting’ (Littré).
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).
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n.adj.1398v.1841
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