flap - noun

any broad thin and limber covering attached at one edge; hangs loose or projects freely

an excited state of agitation

the motion made by flapping up and down

a movable piece of tissue partly connected to the body

a movable airfoil that is part of an aircraft wing; used to increase lift or drag

flap - verb

• move in a wavy pattern or with a rising and falling motion
• move noisily
• move with a thrashing motion
• move with a flapping motion
• make a fuss; be agitated
• pronounce with a flap, of alveolar sounds

flap - thesaurus

beat   dither   flapping   flaps   flutter   fluttering   fuss   pother   roll   tizzy   undulate   wave