1. Any broad thin and limber covering attached at one edge;
    Hangs loose or projects freely (synset 103362222)
    "he wrote on the flap of the envelope"
  2. An excited state of agitation (synset 114427176)
    "he was in a dither"; "there was a terrible flap about the theft"
  3. The motion made by flapping up and down (synset 107453884)
  4. A movable piece of tissue partly connected to the body (synset 105397105)
  5. A movable airfoil that is part of an aircraft wing;
    Used to increase lift or drag (synset 103362562)
  1. Move in a wavy pattern or with a rising and falling motion (synset 201905776)
    "The curtains undulated"; "the waves rolled towards the beach"
  2. Move noisily (synset 201884881)
    "flags flapped in the strong wind"
  3. Move with a thrashing motion (synset 202097888)
    "The bird flapped its wings"; "The eagle beat its wings and soared high into the sky"
  4. Move with a flapping motion (synset 202097668)
    "The bird's wings were flapping"
  5. Make a fuss;
    Be agitated (synset 201823849)
  6. Pronounce with a flap, of alveolar sounds (synset 201057430)

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