Main entry: flail, lam, thrash, thresh
Definition: give a thrashing to; beat hard
Definition: beat the seeds out of a grain
Main entry: thrash, thrash about, thresh, thresh about, toss, slash, convulse, jactitate
Definition: move or stir about violently
Usage: The feverish patient thrashed around in his bed
Definition: move like a flail; thresh about
Usage: Her arms were flailing