spasm

Entry Definition
seizure, muscle spasm; condition of having seizures, muscle spasms; (figuratively) one who works fast, rushes a job
s/he has muscle spasm, twitches
(body part) it twitches, has spasm
(muscle, hamstring) s/he, it cramps, goes into spasm; (rope) s/he kinks
s/he, it is stuck in or into (something)