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Dictionary definition for: Flap
1. (n) any broad thin and limber covering attached at one edge; hangs loose or projects freely; "he wrote on the flap of the envelope"
2. (v) move in a wavy pattern or with a rising and falling motion; "The curtains undulated" "the waves rolled towards the beach"
3. (n) an excited state of agitation; "he was in a dither" "there was a terrible flap about the theft"
4. (v) move noisily; "flags flapped in the strong wind"
5. (n) the motion made by flapping up and down
6. (v) move with a thrashing motion; "The bird flapped its wings" "The eagle beat its wings and soared high into the sky"
7. (n) a movable piece of tissue partly connected to the body
8. (v) move with a flapping motion; "The bird''s wings were flapping"
9. (n) a movable airfoil that is part of an aircraft wing; used to increase lift or drag
WordNet 2.1 Copyright Princeton University. All rights reserved.
