clincher

[ klin-cher ]
/ ˈklɪn tʃər /

noun

a person or thing that clinches.
a statement, argument, fact, situation, or the like, that is decisive or conclusive: The heat was the clincher that made us decide to leave the city.
a nail, screw, etc., for clinching.
Automotive. a clincher tire.

Origin of clincher

1485–95; variant of Middle English clencher (clench + -er1)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for clincher

clincher

/ (ˈklɪntʃə) /

noun

informal something decisive, such as a fact, score, etc
a person or thing that clinches
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

Word Origin and History for clincher

clincher


n.

early 14c., "person or thing that clinches" (i.e., secures nails by bending down or riveting the pointed end), late 15c. as a class of shipyard worker; agent noun from clinch (v.). As a type of nail, from 1735; as a conclusive statement, argument, etc., 1737.

Online Etymology Dictionary, © 2010 Douglas Harper