spasm

spasm

noun \ˈspaz-əm\

Definition of SPASM

1

: an involuntary and abnormal contraction of muscle or muscle fibers or of a hollow organ (as an artery, the colon, or the esophagus) that consists largely of involuntary muscle fibers

2

: the state or condition of a muscle or organ affected with spasms <the renal artery went into spasm>