knothole

[ not-hohl ]
/ ˈnɒtˌhoʊl /

noun

a hole in a board or plank formed by the falling out of a knot or a portion of a knot.

Origin of knothole

First recorded in 1720–30; knot1 + hole
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for knothole

knothole

/ (ˈnɒtˌhəʊl) /

noun

a hole in a piece of wood where a knot has been
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