noun (n)

• a sudden uncontrollable attack

  serangan mendadak tidak terkawal

  Example:
  Convulsions of laughter.
  

  Synonym:
  fit, paroxysm
  

  source: wordnet30
• violent uncontrollable contractions of muscles

  kontraksi otot dari kekerasan tak terkendali

  source: wordnet30
• a violent disturbance

  kekerasan gangguan

  Example:
  The convulsions of the stock market.
  

  Synonym:
  turmoil, upheaval
  

  source: wordnet30
• a physical disturbance such as an earthquake or upheaval

  sebuah gangguan fizikal seperti gempa bumi atau pergolakan

  source: wordnet30
• An unnatural, violent, and unvoluntary contraction of the muscular parts of an animal body.

  yang tidak biasa, kekerasan, dan unvoluntary kontraksi leher berotot bagian tubuh hewan.

  source: webster1913