plumb rule

a device for determining perpendicularity, consisting of a narrow board with a plumb line and bob suspended from an upper edge.
[1350-1400; ME plomreule]

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Universalium. 2010.

Look at other dictionaries:

  • Plumb rule — Plumb Plumb (pl[u^]m), n. [F. plomb, L. plumbum lead, a leaden ball or bullet; cf. Gr. mo lybos, mo libos, mo lybdos. Cf. {Plummet}, {Plunge}.] A little mass or weight of lead, or the like, attached to a line, and used by builders, etc., to… …   The Collaborative International Dictionary of English

  • plumb rule — plumb′ rule n. bui sur a device for determining perpendicularity, consisting of a narrow board with a plumb line hanging from it • Etymology: 1350–1400 …   From formal English to slang

  • plumb rule — n. a narrow board equipped with a plumb line and bob, used by carpenters, masons, etc …   English World dictionary

  • plumb rule — noun a plumb line attached to a narrow board • Hypernyms: ↑plumb line, ↑perpendicular * * * noun Etymology: Middle English plomrewle, from plom, plum, plumbe, n., plumb + rewle, reule rule : a narrow board with a plumb line and bob used… …   Useful english dictionary

  • plumb rule — noun a plumb line attached to a board, used by builders and surveyors …   English new terms dictionary

  • plumb-rule — /ˈplʌm rul/ (say plum roohl) noun a device used by builders, etc., for determining perpendicularity, consisting of a narrow board fitted with a plumbline and bob …   Australian English dictionary

  • plumb-rule — …   Useful english dictionary

  • Plumb — (pl[u^]m), n. [F. plomb, L. plumbum lead, a leaden ball or bullet; cf. Gr. mo lybos, mo libos, mo lybdos. Cf. {Plummet}, {Plunge}.] A little mass or weight of lead, or the like, attached to a line, and used by builders, etc., to indicate a… …   The Collaborative International Dictionary of English

  • Plumb bob — Plumb Plumb (pl[u^]m), n. [F. plomb, L. plumbum lead, a leaden ball or bullet; cf. Gr. mo lybos, mo libos, mo lybdos. Cf. {Plummet}, {Plunge}.] A little mass or weight of lead, or the like, attached to a line, and used by builders, etc., to… …   The Collaborative International Dictionary of English

  • Plumb joint — Plumb Plumb (pl[u^]m), n. [F. plomb, L. plumbum lead, a leaden ball or bullet; cf. Gr. mo lybos, mo libos, mo lybdos. Cf. {Plummet}, {Plunge}.] A little mass or weight of lead, or the like, attached to a line, and used by builders, etc., to… …   The Collaborative International Dictionary of English

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