1. (n.) One who, or that which, thrashes grain; a thrashing machine.

2. (n.) A large and voracious shark (Alopias vulpes), remarkable for the great length of the upper lobe of its tail, with which it beats, or thrashes, its prey. It is found both upon the American and the European coasts. Called also fox shark, sea ape, sea fox, slasher, swingle-tail, and thrasher shark.

3. (n.) A name given to the brown thrush and other allied species. See Brown thrush.

4. (n.) Same as Thrasher.

all-crop harvester baler bean harvester beet harvester binder breaker cast plow combine cotton picker cultivator disk disk harrow disk plow drag drill drill plow four-bottom plow gang plow grain harvester grub hook harrow harvester haymaker header hoe drill lister lister cultivator middlebreaker moldboard plow peg-tooth harrow planter plow plow drill prairie breaker press drill rake rotary plow scooter seed plow seeder shovel plow snap machine sprayer spring-tooth harrow stag gang subsoil plow sulky lister sulky plow swather swivel plow tedder thrasher three-bottom plow thresher threshing machine trench plow turnplow two-bottom plow vineyard plow walking plow windrower