definition of
flail

[1] #1 flail n. an implement consisting of handle with a free swinging stick at the end; used in manual threshing. wn

[2] #2 flail v. [thrash, thresh, lam] give a thrashing to; beat hard. wn

[3] #3 flail v. [thresh] move like a flail; thresh about; "Her arms were flailing". wn