thrash /ˈθræʃ/
 (vt.)打,使逆行,勝過,推敲,鞭打,使顛簸(vi.)打穀,擊,顛簸,逆行打撲,劃水
 Thrash Thresh, v. t. [imp. & p. p. Thrashed p. pr. & vb. n. Thrashing.]
 1. To beat out grain from, as straw or husks; to beat the straw or husk of (grain) with a flail; to beat off, as the kernels of grain; as, to thrash wheat, rye, or oats; to thrash over the old straw.
    The wheat was reaped, thrashed, and winnowed by machines.   --H. Spencer.
 2. To beat soundly, as with a stick or whip; to drub.
 Thrash, Thresh, v. t.
 1. To practice thrashing grain or the like; to perform the business of beating grain from straw; as, a man who thrashes well.
 2. Hence, to labor; to toil; also, to move violently.
 I rather would be Maevius, thrash for rhymes,
 Like his, the scorn and scandal of the times.   --Dryden.
 ◄ ►
 thrash
      n : a swimming kick used while treading water
      v 1: give a thrashing to; beat hard [syn: thresh, lam, flail]
      2: move or stir about violently; "The feverish patient thrashed
         around in his bed" [syn: convulse, thresh, thresh
         about, thrash about, slash, toss, jactitate]
      3: dance the slam dance [syn: slam dance, slam, mosh]
      4: beat so fast that (the heart's) output starts dropping until
         (it) does not manage to pump out blood at all
      5: move data into and out of core rather than performing useful
         computation; "The system is thrashing again!"
      6: beat the seeds out of a grain [syn: thresh]
      7: beat thoroughly in a competition or fight; "We licked the
         other team on Sunday!" [syn: bat, clobber, drub, lick]