thresherman

Century Dictionary and Cyclopedia

1. n. One who pursues the occupation or business of threshing; a thresher.

Wiktionary

1. n. obsolete, agriculture the operator of a mechanical thresher
2. n. obsolete, agriculture the owner-operator of a mechanical thresher, operating as a threshing business
3. n. obsolete, agriculture by extension, the operator of mechanical farm equipment