Search Result for "flapping": 
Wordnet 3.0

NOUN (1)

1. the motion made by flapping up and down;
[syn: flap, flapping, flutter, fluttering]

The Collaborative International Dictionary of English v.0.48:

Flap \Flap\, v. t. [imp. & p. p. Flapped; p. pr. & vb. n. Flapping.] [Prob. of imitative origin; cf. D. flappen, E. flap, n., flop, flippant, fillip.] 1. To beat with a flap; to strike. [1913 Webster] Yet let me flap this bug with gilded wings. --Pope. [1913 Webster] 2. To move, as something broad and flaplike; as, to flap the wings; to let fall, as the brim of a hat. [1913 Webster] To flap in the mouth, to taunt. [Obs.] --W. Cartwright. [1913 Webster]
WordNet (r) 3.0 (2006):

flapping n 1: the motion made by flapping up and down [syn: flap, flapping, flutter, fluttering]