Definition of "Convulse" :

verb: be overcome with laughter

verb: make someone convulse with laughter

"The comedian convulsed the crowd."

verb: contract involuntarily, as in a spasm

"The muscles in her face convulsed."

verb: cause to contract

"The spasm convulses her facial muscles."

verb: shake uncontrollably

"Earthquakes convulsed the countryside."

verb: move or stir about violently