plumb bobn.

Brit.

/ˈplʌm ˌbɒb/, U.S.

/ˈpləm ˌbɑb/

Forms: see plumb n.¹ and bob n.¹; also 1900s– plumbob.

Origin: Formed within English, by compounding. Etymons: plumb n.¹, bob n.¹

Etymology: < plumb n.¹ + bob n.¹

A piece of lead, brass, etc., usually conoidal in shape, intended to be hung from a plumb line.

ΘΚΠ

society > occupation and work > equipment > equipment for marking out work > [noun] > plumb-line or chalk-line > part of

lead1340

line pin1688

plumb bob1836

1836 T. C. Haliburton Clockmaker 1st Ser. v. 24 If he is found here after twenty four hours, they'd make a carpenter's plumb-bob of him, and hang him outside the church steeple.

1860 Sci. Amer. 2 June 367/1 (advt.) Mathematical instruments..plumb bobs, sundials, triangles, [etc.].

1907 Science 8 Feb. 228/2 He struck a stream of water running so swiftly that he could not pass a two-pound iron plumb bob attached to a fishing line through it.

1938 J. Rice Somers Inheritance III. ii. 115 Nancy stepped ostentatiously into the outer office & closed her typewriter desk. On a former visit little Frank had got hold of a plumbob & smashed three of the keys.

1971 Tools & their Uses (U.S. Navy Bureau of Naval Personnel) (1973) iii. 109 A plumb bob..is a pointed, tapered brass or bronze weight which is suspended from a cord for determining the vertical or plumb line.

2003 S.W.A.T. May 27 Both scopes were carefully mounted and crosshairs leveled using a plumb-bob.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	plumb bob
释义	plumb bobn. Brit. /ˈplʌm ˌbɒb/, U.S. /ˈpləm ˌbɑb/ Forms: see plumb n.¹ and bob n.¹; also 1900s– plumbob. Origin: Formed within English, by compounding. Etymons: plumb n.¹, bob n.¹ Etymology: < plumb n.¹ + bob n.¹ A piece of lead, brass, etc., usually conoidal in shape, intended to be hung from a plumb line. ΘΚΠ society > occupation and work > equipment > equipment for marking out work > [noun] > plumb-line or chalk-line > part of lead1340 line pin1688 plumb bob1836 1836 T. C. Haliburton Clockmaker 1st Ser. v. 24 If he is found here after twenty four hours, they'd make a carpenter's plumb-bob of him, and hang him outside the church steeple. 1860 Sci. Amer. 2 June 367/1 (advt.) Mathematical instruments..plumb bobs, sundials, triangles, [etc.]. 1907 Science 8 Feb. 228/2 He struck a stream of water running so swiftly that he could not pass a two-pound iron plumb bob attached to a fishing line through it. 1938 J. Rice Somers Inheritance III. ii. 115 Nancy stepped ostentatiously into the outer office & closed her typewriter desk. On a former visit little Frank had got hold of a plumbob & smashed three of the keys. 1971 Tools & their Uses (U.S. Navy Bureau of Naval Personnel) (1973) iii. 109 A plumb bob..is a pointed, tapered brass or bronze weight which is suspended from a cord for determining the vertical or plumb line. 2003 S.W.A.T. May 27 Both scopes were carefully mounted and crosshairs leveled using a plumb-bob. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1836
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