spasm /ˈspæz.m̩/noun 3verb 1forms 3 noun3 •A sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ.Jessica went into spasms after eating a peanut. •A violent, excruciating seizure of pain. •A sudden and temporary burst of energy, activity, or emotion. verb1 •To produce and undergo a spasm or series of spasms. formsspasmed · spasming · spasms