n. A rounded protuberance; a swelling; a swell; a hump.n. The swirl made by a salmon rising to the surface.To swell out; be protuberant.To bilge, as a ship.n. A rapid rise in price, of stock, grain, cotton, or the like, followed by an equally rapid fall, owing to some temporary causes. The name has reference to the curve in a diagram of prices.To cause to swell out and become protuberant.To bilge or stave in the bottom of, as a ship.