Definitions of convulse:

• verb:   be overcome with laughter
• verb:   make someone convulse with laughter

  Example: "The comedian convulsed the crowd"

• verb:   contract involuntarily, as in a spasm

  Example: "The muscles in her face convulsed"

• verb:   cause to contract

  Example: "The spasm convulses her facial muscles"

• verb:   shake uncotrollably

  Example: "Earthquakes convulsed the countryside"

• verb:   move or stir about violently