thresher

Meaning

Noun

• Anything or anyone that threshes.
• A now-obsolete hand tool for threshing, also called a flail.
• A modern farm machine for threshing grain, now a part of combine harvesters rather than a separate implement.
• Any of several large pelagic sharks of the genus Alopias, which have a very long tail; more commonly called thresher sharks.

Origin

• From Middle English thresshere; equivalent to thresh + -er. The shark's tail is thought to resemble the implement.