Flap, v. t. [imp. & p. p.Flapped (?); p. pr. & vb. n.Flapping (?).] [Prob. of imitative origin; cf. D. flappen, E. flap, n., flop, flippant, fillip.] 1. To beat with a flap; to strike.
Yet let me flap this bug with gilded wings. Pope.
2. To move, as something broad and flaplike; as, to flap the wings; to let fall, as the brim of a hat.
To flap in the mouth, to taunt. W. Cartwright.