thresh

To separate the grain from the straw or husks (chaff) by mechanical beating, with a flail or machinery, or by driving animals over them.

To separate the grain from the straw or husks (chaff) by mechanical beating, with a flail or machinery, or by driving animals over them.

To beat soundly, usually with some tool such as a stick or whip; to drub.

To violently toss the limbs about.

The jay fell all lopsidedly and threshing, as though it were having a fit. The ground killed it.

To belabor; to go over repeatedly, especially an argument.