名词

1. 痉挛;抽搐
A spasm is a sudden tightening of your muscles, which you cannot control.

2. (剧痛或不愉快情感的)阵发，迸发
A spasm is a sudden strong pain or unpleasant emotion which lasts for a short period of time.

1. (pathology) sudden constriction of a hollow organ (as a blood vessel)

2. a painful and involuntary muscular contraction

Synonym: crampmuscle spasm