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plummet

[pluhm-it] /ˈplʌm ɪt/
noun
1.
Also called plumb bob. a piece of lead or some other weight attached to a line, used for determining perpendicularity, for sounding, etc.; the bob of a plumb line.
2.
something that weighs down or depresses.
verb (used without object)
3.
to plunge.
Origin
1350-1400
1350-1400; (noun) Middle English plommet < Middle French, diminutive of plomb lead; (v.) derivative of the noun See plumb, -et
Related forms
unplummeted, adjective
Synonyms
3. fall, dive, drop, swoop.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un plummeted

plummet

/ˈplʌmɪt/
verb -mets, -meting, -meted
1.
(intransitive) to drop down; plunge
noun
2.
another word for plumb bob
3.
a lead plumb used by anglers to determine the depth of water
Word Origin
C14: from Old French plommet ball of lead, from plomb lead, from Latin plumbum
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 un plummeted
plummet
late 14c., "ball of lead, plumb of a bob-line," from O.Fr. plomet, dim. of plom "sounding lead" (see plumb). The verb is first recorded 1620s, originally "to fathom, take soundings," from the noun. Meaning "to fall rapidly" first recorded 1939.
Online Etymology Dictionary, © 2010 Douglas Harper
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