midribn.
/ˈmɪdrɪb/, U.S. /ˈmɪdˌrɪb/ΘΚΠ
the world > space > extension in space > measurable spatial extent > vertical extent > extension downwards or depth > depth [phrase] > in something to specific depth
up to the shoes1518
over head and ears?1521
head and ears1576
mid-rib deep1697
(immersed, steeped) to the lipsa1822
up to one's (also the) armpits1869
1697 Philos. Trans. 1695–7 (Royal Soc.) 19 350 Nets trailed on the Ground by two Horses, one goeth Mid-rib deep into the Sea.
1806 P. Gass Jrnl. 6 July (1807) 236 A north branch..is 40 yards wide and was mid-rib deep on our horses.
2.
a. Botany. A principal rib or vein, continuous with the petiole, extending through the central part of the blade of a leaf.
ΘΚΠ
the world > plants > part of plant > leaf > [noun] > part or side of > rib or vein
nerve?a1425
ribc1450
vein?c1450
sinew1551
brawn1601
master-vein1658
costa1699
venule1766
pen1773
surculus1775
midrib1793
venule1806
veinlet1807
rachis1830
nervure1842
nerving1854
1793 T. Martyn Lang. Bot. sig. M2v Mid-rib, the main nerve or middle rib of the leaf,..from which the veins of the leaf usually arise and spread.
1796 W. Withering Arrangem. Brit. Plants (ed. 3) II. 91 Scales spear-shaped, skinny, yellow, with a green midrib.
1849 J. H. Balfour Man. Bot. §144 Unicostate. A single rib or costa in the middle (midrib).
1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns 445 The petiole and midrib of the leaves.
1901 Chambers's Jrnl. May 301/2 The leaves are thoroughly dried. In testing their dryness the mid-rib or vein should not be overlooked.
1965 K. Esau Plant Anat. (ed. 2) xvi. 434 In some large grasses the median part of the blade is thickened into a midrib.
1988 Garden Dec. 578/1 The stems are clothed with scattered prickles which find their way on to the leaf stalks and leaf midrib.
b. Archaeology. A central ridge on the blade of a weapon or other artefact, as resembling the midrib of a leaf.
ΘΚΠ
society > armed hostility > military equipment > weapon > sharp weapon > [noun] > vein-like central structure
midrib1875
1875 Jrnl. Anthropol. Inst. 4 222 No. 25..is a flake of the same dark brown colour... It has a well-marked bulb of percussion on the flat side, and a midrib on the other.
1929 V. G. Childe Danube in Prehist. 126 Kite-shaped daggers with rivet-holes and a rudimentary midrib.
1938 Proc. Prehistoric Soc. 4 283 Three flanged axes were found with a tanged spearhead with short blade and pronounced mid-rib.
1977 G. Clark World Prehist. (ed. 3) iv. 155 These not merely smelted copper ores and cast them into flat axes, chisels and tanged daggers with marked midribs, but understood how to strengthen them by adding alloys.
ΚΠ
1884 J. Phin Dict. Apiculture 13 The word midrib has been used to denote the septum or partition between the two sheets of cells which are found in every comb.
This entry has been updated (OED Third Edition, March 2002; most recently modified version published online March 2022).
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n.1697