Definitions
1.VerbTo separate the grain from the straw or husks (chaff) by mechanical beating, with a flail or machinery, or by driving animals over them.
To be so separated, or to be capable of being so separated.
2.VerbTo be so separated, or to be capable of being so separated.
3.VerbTo beat soundly, usually with some tool such as a stick or whip; to drub.
4.VerbTo violently toss the limbs about.
5.VerbTo belabor; to go over repeatedly, especially an argument.
6.VerbTo drive through adverse conditions (wind, waves).