Convulsion
Pronunciation : Con*vul"sion
Part of Speech : n.
Etymology : [L. convulsio: cf. F. convulsion.]
Definition : 1. (Med.)
Defn: An unnatural, violent, and unvoluntary contraction of the muscular parts of an animal body.
2. Any violent and irregular motion or agitation; a violent shaking; a tumult; a commotion. Those two massy pillars, With horrible convulsion, to and fro He tugged, he shook, till down they came. Milton. Times of violence and convulsion. Ames.
Syn. -- Agitation; commotion; tumult; disturbance.
Source : Webster's Unabridged Dictionary, 1913