flap -- (a movable piece of tissue partly connected to the body)
flap, flaps -- (a movable airfoil that is part of an aircraft wing; used to increase lift or drag)
Overview of verb flap
The verb flap has 6 senses
roll, undulate, flap, wave -- (move in a wavy pattern or with a rising and falling motion; "The curtains undulated"; "the waves rolled towards the beach")
flap -- (move noisily; "flags flapped in the strong wind")
beat, flap -- (move with a thrashing motion; "The bird flapped its wings"; "The eagle beat its wings and soared high into the sky")
beat, flap -- (move with a flapping motion; "The bird's wings were flapping")
dither, flap, pother -- (make a fuss; be agitated)
flap -- (pronounce with a flap, of alveolar sounds)