Meaning of MUSCLE SPASM

WordNet Dictionary
	Definition:		[n]  a painful and involuntary muscular contraction
	Synonyms:		cramp, spasm
	See Also:		blepharospasm, charleyhorse, crick, graphospasm, myoclonus, opisthotonos, rick, symptom, tenesmus, trismus, twitch, twitching, vellication, wrick, writer's cramp