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Origin of plumb bob

First recorded in 1825–35
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How to use plumb bob in a sentence

British Dictionary definitions for plumb bob

plumb bob

noun
the weight, usually of lead, at the end of a plumb line; plummet
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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