What is the meaning of thrash?

noun

• A swimming kick used while treading water.

verb

• Give a thrashing to; beat hard.
  • synonyms: thresh, lam, flail
• Move or stir about violently.
  • usage: "The feverish patient thrashed around in his bed"
  • synonyms: convulse, thresh, thresh about, thrash about, slash, toss, jactitate
• Dance the slam dance.
  • synonyms: slam dance, slam, mosh
• Beat so fast that (the heart's) output starts dropping until (it. does not manage to pump out blood at all)
• Move data into and out of core rather than performing useful computation.
  • usage: "The system is thrashing again"
• Beat the seeds out of a grain.
  • synonyms: thresh
• Beat thoroughly and conclusively in a competition or fight.
  • usage: "We licked the other team on Sunday"
  • synonyms: cream, bat, clobber, drub, lick