Crossword Genius

Muscular jerk? (5)

Ross

I believe the answer is:

spasm

'muscular jerk?' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for spasm that I've seen before include "Convulsive action" , "Convulsion or paroxysm" , "Jerk" , "Sudden involuntary contraction of a muscle" , "cramp" .)

I've seen this clue in the Universal and The Wall Street Journal.
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