Spasm
/spˈæzəm/
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Definition
(noun) A sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ.
Sentence Examples
I feel a sort of spasm in my left leg.
A spasm, violent and uncontrollable, stiffened every muscle in his body.
CEFR Practice Quiz
The athlete felt a sudden muscle ____ in his leg after running the long race in the summer heat.