To make abrupt or agitated movements with the limbs and body; turn or twist as with sudden petulance or impatience; move with flings or turns, as if in displeasure or annoyance: as, to flounce out of a room.n. A sudden fling or turn, as of the body.n. A deep ruffle; a strip of any material used to decorate a garment, especially a skirt near the bottom, gathered or plaited at one edge, and loose and floating at the other, the gathered edge being sewed to the garment.To deck with flounces: as, to flounce a petticoat or a gown.To surround with something arranged like a flounce.n. In saddlery, a covering for a pistol-holster, either of leather or bearskin.