THRESH
thrash, thresh, lam, flail
(verb) give a thrashing to; beat hard
thrash, thresh
(verb) beat the seeds out of a grain
convulse, thresh, thresh about, thrash, thrash about, slash, toss, jactitate
(verb) move or stir about violently; “The feverish patient thrashed around in his bed”
flail, thresh
(verb) move like a flail; thresh about; “Her arms were flailing”
Source: WordNet® 3.1
Etymology
Verb
thresh (third-person singular simple present threshes, present participle threshing, simple past and past participle threshed)
(transitive, agriculture) To separate the grain from the straw or husks (chaff) by mechanical beating, with a flail or machinery.
(transitive, literary) To beat soundly, usually with some tool such as a stick or whip; to drub.
Synonyms
• thrash
Source: Wiktionary
Thrash, Thresh, v. t. [imp. & p. p. Thrashed; p. pr. & vb. n.
Thrashing.] Etym: [OE. , , to beat, AS. , ; akin to D. dorschen, OD.
derschen, G. dreschen, OHG. dreskan, Icel. , Sw. tröska, Dan. tærske,
Goth. , Lith. traszketi to rattle, Russ. treskate to burst, crackle,
tresk' a crash, OSlav. troska a stroke of lighting. Cf. Thresh.]
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 Mævius, thrash for rhymes, Like his, the scorn and
scandal of the times. Dryden.
Thresh, v. t. & i. [imp. & p. p. Threshed; p. pr. & vb. n.
Threshing.]
Definition: Same as Thrash.
He would thresh, and thereto dike and delve. Chaucer.
Source: Webster’s Unabridged Dictionary 1913 Edition