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单词 plumb rule
释义

plumb rule

SEE SYNONYMS FOR plumb rule ON THESAURUS.COM

noun

a device for determining perpendicularity, consisting of a narrow board with a plumb line and bob suspended from an upper edge.

Origin of plumb rule

1350–1400; Middle English plomreule

Words nearby plumb rule

plumbism, plumb joint, plumb line, plumbous, plumbous oxide, plumb rule, plumbum, plumcot, plum duff, plume, plumed
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for plumb rule

plumb rule

noun

a plumb line attached to a narrow board, used by builders, surveyors, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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更新时间:2025/1/9 8:57:59