Flap, v. t. [imp. & p. p. Flapped p. pr. & vb. n. Flapping ]
  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. [Obs.]
  flap
       n 1: any broad thin and limber covering attached at one edge;
            hangs loose or projects freely; "he wrote on the flap of
            the envelope"
       2: an excited state of agitation; "he was in a dither"; "there
          was a terrible flap about the theft" [syn: dither, pother,
           fuss, tizzy]
       3: the motion made by flapping up and down [syn: flapping, flutter,
           fluttering]
       4: a movable piece of tissue partly connected to the body
       5: a movable airfoil that is part of an aircraft wing; used to
          increase lift or drag [syn: flaps]
       v 1: move in a wavy pattern or with a rising and falling motion;
            "The curtains undulated"; "the waves rolled towards the
            beach" [syn: roll, undulate, wave]
       2: move noisily; "flags flapped in the strong wind"
       3: move with a thrashing motion; "The bird flapped its wings";
          "The eagle beat its wings and soared high into the sky"
          [syn: beat]
       4: move with a flapping motion; "The bird's wings were
          flapping" [syn: beat]
       5: make a fuss; be agitated [syn: dither, pother]
       6: pronounce with a flap, of alveolar sounds
       [also: flapping, flapped]