wing nut

or wingnut


noun

a nut having two flat, widely projecting pieces such that it can be readily tightened with the thumb and forefinger.

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Also called butterfly nut, thumbnut.

Origin of wing nut

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Example sentences from the Web for wing nut

British Dictionary definitions for wing nut

wing nut

noun

a threaded nut tightened by hand by means of two flat lugs or wings projecting from the central bodyAlso called: butterfly nut
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