Etymology
Advertisement

thrash (v.)

1580s, "to separate grains from wheat, etc., by beating," dialectal variant of threshen (see thresh). Sense of "beat (someone) with (or as if with) a flail" is first recorded 1620s. Meaning "to make wild movements like those of a flail or whip" is attested from 1846. Related: Thrashed; thrashing. As a noun from 1660s, "threshing tool;" 1840s as "a beating;" 1982 as the name for a type of fast heavy metal music.

Others are reading

Advertisement
Advertisement
Definitions of thrash
1
thrash (v.)
give a thrashing to; beat hard;
Synonyms: thresh / lam / flail
thrash (v.)
move or stir about violently;
The feverish patient thrashed around in his bed
Synonyms: convulse / thresh / thresh about / thrash about / slash / toss / jactitate
thrash (v.)
dance the slam dance;
Synonyms: slam dance / slam / mosh
thrash (v.)
beat so fast that (the heart's) output starts dropping until (it) does not manage to pump out blood at all;
thrash (v.)
move data into and out of core rather than performing useful computation;
The system is thrashing again!
thrash (v.)
beat the seeds out of a grain;
Synonyms: thresh
thrash (v.)
beat thoroughly and conclusively in a competition or fight;
Synonyms: cream / bat / clobber / drub / lick
2
thrash (n.)
a swimming kick used while treading water;
From wordnet.princeton.edu