- a joint forming a knuckle.
- Machinery. a joint between two parts allowing movement in one plane only.
Origin of knuckle joint
First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for knuckle joint
The piping terminates in a nozzle with knuckle-joint and lateral movement.The A B C of Mining
Charles A. Bramble
- any of the joints of the fingers
- mechanical engineering a hinged joint between two rods, often a ball and socket 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