What does the word convulsion mean?

Usage examples for convulsion

  1. A great physical convulsion in the course of the thirteenth century came to add its influence to the slower process of political revolution. – Project Gutenberg History of The Netherlands, 1555-1623, Complete by John Lothrop Motley
  2. A sort of convulsion shook his body. – The Best Short Stories of 1921 and the Yearbook of the American Short Story by Various
  3. Instantly there was a dead silence- ' but here Coningsby, who had moved for some time very restlessly on his chair, suddenly started up, and struggling for a moment against the inward convulsion, but in vain, stamped against the floor, and gave a shout. – Coningsby by Benjamin Disraeli