Definition of "convulse" [con•vulse]

• To shake or agitate violently: tremors that convulsed the countryside; when civil war convulsed the nation. See Synonyms at agitate. (verb-transitive)
• To affect with irregular and involuntary muscular contractions; throw into convulsions. (verb-transitive)
• To cause to shake with laughter or strong emotion. (verb-transitive)
• To become affected by or as if by convulsions; shake. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Which wasn’t too bad until I noticed it was absolutely everywhere and started to convulse from the overdose."
• "Your insides will convulse and your heart will twist."
• "I convulse for a second, then exhale sharply, slam the glass down and bring the beer to my lips."