wing nut

or wingnut


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

Origin of wing nut

1
First recorded in 1895–1900

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How to use wing nut in a sentence

British Dictionary definitions for wing nut

wing nut

noun
  1. a threaded nut tightened by hand by means of two flat lugs or wings projecting from the central body: Also 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