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plumb bob

noun
1.
plummet (def 1).
Origin of plumb bob
1825-1835
1825-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for plumb-bob

plumb bob

noun
1.
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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Word Origin and History for plumb-bob
n.

1835, from plumb (n.) + bob (n.1).

Online Etymology Dictionary, © 2010 Douglas Harper
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Word Value for plumb

11
16
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