to be supported by water or other fluid; not to sink; to float; as, any substance will swim, whose specific gravity is less than that of the fluid in which it is immersed.-to move progressively in water by means of strokes with the hands and feet, or the fins or the tail.-to be overflowed or drenched.-fig.: to be as if borne or floating in a fluid.-to be filled with swimming animals.-to pass or move over or on by swimming; as, to swim a stream.-to cause or compel to swim; to make to float; as, to swim a horse across a river.-to immerse in water that the lighter parts may float; as, to swim wheat in order to select seed.-the act of swimming; a gliding motion, like that of one swimming.-the sound, or air bladder, of a fish.-a part of a stream much frequented by fish.-to be dizzy; to have an unsteady or reeling sensation; as, the head swims.