Thrash \Thrash\, Thresh \Thresh\, v. t. [imp. & p. p. Thrashed; p. pr. & vb. n. Thrashing.]

[OE. [thorn]reschen, [thorn]reshen, to beat, AS. [thorn]erscan, [thorn]rescan; akin to D. dorschen, OD. derschen, G. dreschen, OHG. dreskan, Icel. [thorn]reskja, Sw. tr["o]ska, Dan. t[ae]rske, Goth. [thorn]riskan, 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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Thrashing \Thrash"ing\, a. & n. from Thrash, v.

Thrashing floor, Threshing-floor, or Threshing floor, a floor or area on which grain is beaten out.

Thrashing machine, a machine for separating grain from the straw.

Source: Webster's Revised Unabridged Dictionary (1913)