v. 1 tr. beat out or separate grain from (corn etc.). 2 intr. = THRASH v. 4. 3 tr. (foll. by over) analyse (a problem etc.) in search of a solution. threshing-floor a hard level floor for threshing esp. with flails. threshing-machine a power-driven machine for separating the grain from the straw or husk. thresh out = thrash out.
[ var. of THRASH ]