Thrasher
Part of speech: noun
Definition: One who thrashes. Any of several New World passerine songbirds, of the genus Toxostoma, that have a long, downward-curved beak
Thresher
Part of speech: noun
Definition: A modern farm machine for threshing grain, now a part of combine harvesters rather than a separate implement.Anything or anyone that threshes.Any of several large pelagic sharks of the genus Alopias, which have a very long tail; more commonly called thresher sharks.A now-obsolete hand tool for threshing, also called a flail.