/ Dictionary / Index F flail: Meaning and Definition of Find definitions for: flail Pronunciation: (flāl), [key] — n. an instrument for threshing grain, consisting of a staff or handle to one end of which is attached a freely swinging stick or bar. a similar instrument used as a weapon of war. —v.t., v.i. to beat or swing with or as if with a flail. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: flail (Thesaurus) Flaherty flair Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language