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thumbnut

[thuhm-nuht]
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noun
  1. wing nut.
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Origin of thumbnut

First recorded in 1785–95; thumb + nut
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for thumbnut

Historical Examples

  • Tighten the thumbnut on the bolt K, and this will draw all four corners together with the same pressure.

    The Boy Mechanic, Book 2

    Various


British Dictionary definitions for thumbnut

thumbnut

noun
  1. a nut with projections enabling it to be turned by the thumb and forefinger; wing nut
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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