Thayer's Greek Lexicon

 1. to rend, burst or break asunder, break up, break through
  1) to tear in pieces
  2) to break forth
1b1. into joy, of infants or dumb persons beginning to speak
  3) to distort, convulse
1c1. of a demon causing convulsions in a man possessed
1c2. to dash down, hurl to the ground (a common occurrence in
cases of demon possession and epilepsy)

For Synonyms see entry G5850