n a movable airfoil that is part of an aircraft wing; used to increase lift or drag
n any broad thin and limber covering attached at one edge; hangs loose or projects freely
n an excited state of agitation
n the motion made by flapping up and down
n a movable piece of tissue partly connected to the body
n a movable airfoil that is part of an aircraft wing; used to increase lift or drag
v move in a wavy pattern or with a rising and falling motion
v move noisily
v move with a thrashing motion
v move with a flapping motion
v make a fuss; be agitated
v pronounce with a flap, of alveolar sounds
n. 马唇肿胀