2 entries found for flap.
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flap[1,noun] flap[2,verb]

Main Entry: ¹flap
Pronunciation: flap
Function: noun
1 : ¹SLAP 1
2 : a broad, limber, or flat piece that hangs loose (as on a pocket or envelope)
3 : the motion or sound of a flap
4 : a movable part of an airplane wing that is attached to the trailing edge of the wing and that is used to increase lift