[nuhk-uh l-bohn]


(in humans) any of the bones forming a knuckle of a finger.
(in quadrupeds) a bone homologous with a wrist, ankle, or finger bone of humans, or its knobbed end.

Origin of knucklebone

late Middle English word dating back to 1400–50; see origin at knuckle, bone Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for knucklebone

Historical Examples of knucklebone

  • But they must wait in patience yet a little longer, if even a knucklebone is to be a share.

    The Three Mulla-mulgars

    Walter De La Mare

British Dictionary definitions for knucklebone



any bone forming part of a knuckle or knuckle joint
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

knucklebone in Medicine




A knobbed bone, as of a knuckle or joint.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.