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English definition of “flap”

flap

noun [C] (WAVE)    /flæp/
the action of a bird waving its wings when flying, or of something else moving in this way: A few flaps of its long wings and the bird was gone.Shaking, swinging and vibrating
(Definition of flap noun (WAVE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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