Thresh (verb)

1. To separate the grain from the straw in cereal crops by beating the stems with a flail or similar implement.
2. To beat or strike repeatedly and violently.

Origin:

Old english þrescan, of germanic origin, related to dutch dorsen and german dreschen.

Examples:

1. Farmers were threshing wheat by hand.
2. The wind was threshing the trees.
3. He threshed the corn to separate the grain from the straw.
4. The waves were threshing against the rocks.
5. He threshed the rug to get the dust out.