spasm

A sudden, involuntary contraction of a muscle or group of muscles.

A sudden burst of energy, activity, or emotion.

Excessive muscular contraction.

In general, any sudden transitory movement of a convulsive character, voluntary or involuntary; an abnormally energetic action or phase of feeling; a wrenching strain or effort: as, a spasm of industry, of grief, of fright, etc.; a spasm of pain or of coughing.

An involuntary and unnatural contraction of one or more muscles or muscular fibers.

A sudden, violent, and temporary effort or emotion.

See under Cynic.

See Angina pectoris, under Angina.

A sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ.

A violent, excruciating seizure of pain.