spasm
US /ˈspæz.əm/
UK /ˈspæz.əm/

1.
spasme, convulsion
a sudden, involuntary muscular contraction or convulsive movement
:
•
The sudden cold water caused a spasm in his leg.
L'eau froide soudaine a provoqué un spasme dans sa jambe.
•
She experienced a painful muscle spasm in her back.
Elle a ressenti un spasme musculaire douloureux dans le dos.