1. • noun - any broad thin and limber covering attached at one edge
   • noun - an excited state of agitation
   • noun - the motion made by flapping up and down
   • noun - a movable piece of tissue partly connected to the body
   • noun - a movable airfoil that is part of an aircraft wing
   • verb - move in a wavy pattern or with a rising and falling motion
   • verb - move noisily
   • verb - move with a thrashing motion
   • verb - move with a flapping motion
   • verb - make a fuss
   • verb - pronounce with a flap, of alveolar sounds
2. • A flat, usually thin piece attached at only one side.
   • A projecting or hanging piece usually intended to double over and protect or cover: the flap of an envelope.
   • The act of waving or fluttering: the flap of the flag in the wind.
   • The sound produced by this motion.
   • A blow given with something flat; a slap.
   • A variable control surface on the trailing edge of an aircraft wing, used primarily to increase lift or drag.
   • Either of the folded ends of a book jacket that fit inside the front and back covers.
   • Tissue that has been partially detached and used in surgical grafting to fill an adjacent defect or cover the cut end of a bone after amputation.
   • A commotion or disturbance: a flap in Congress over the defense budget.
   • To wave (the arms, for example) up and down.
   • To cause to move or sway with a fluttering or waving motion.
   • To hit with something broad and flat; slap.
   • To fling down; toss.
   • To move or sway while fixed at one edge or corner; flutter: banners flapping in the breeze.
   • To wave arms or wings up and down.
   • To fly by beating the air with the wings.
   • To become upset or flustered.
3. • v - to wave up and down

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