Thresher (noun)

1. A machine or device for threshing grain.
2. A person who threshes grain.

Origin:

From middle english threschier, from old english threscan, from proto-germanic *threskijaną.

Examples:

1. The thresher was a crucial tool for farmers in the old days.
2. The thresher worked tirelessly, separating the grain from the straw.
3. The farmer hired a thresher to help with the harvest.
4. The old thresher was still in good condition despite its age.
5. The thresher made quick work of the harvested crops.