spasm
US /ˈspæz.əm/
UK /ˈspæz.əm/

1.
espasmo, calambre
a sudden, involuntary muscular contraction or convulsive movement
:
•
The sudden cold water caused a spasm in his leg.
El agua fría repentina le causó un espasmo en la pierna.
•
She experienced a painful muscle spasm in her back.
Experimentó un doloroso espasmo muscular en la espalda.