Spasm /(?)/

Spasm

n.
  1. An involuntary and unnatural contraction of one or more muscles or muscular fibers. (Med.)
  2. A sudden, violent, and temporary effort or emotion; as, a spasm of repentance.

Phrases & Compounds
Cynic spasm
See under Cynic.
Spasm of the chest
See Angina pectoris, under Angina.