Definitions of flap:

  • noun:   any broad thin and limber covering attached at one edge; hangs loose or projects freely
    Example: "He wrote on the flap of the envelope"
  • noun:   a movable airfoil that is part of an aircraft wing; used to increase lift or drag
  • noun:   a movable piece of tissue partly connected to the body
  • noun:   the motion made by flapping up and down
  • noun:   an excited state of agitation
    Example: "There was a terrible flap about the theft"
  • verb:   pronounce with a flap, of alveolar sounds
  • verb:   move noisily
    Example: "Flags flapped in the strong wind"
  • verb:   move with a flapping motion
    Example: "The bird's wings were flapping"
  • verb:   move with a thrashing motion
    Example: "The bird flapped its wings"
  • verb:   make a fuss; be agitated
  • verb:   move in a wavy pattern or with a rising and falling motion