Meaning of KNUCKLE JOINT

Pronunciation:			'nukul joynt
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WordNet Dictionary
	Definition:		[n]  a joint allowing movement in one plane only [n]  a joint of a finger when the fist is closed
	Synonyms:		hinge joint, knuckle, metacarpophalangeal joint
	See Also:		articulatio synovialis, finger, joint, synovial joint