(1):
(v. i.) To hawk by the side of a river; to fly hawks at river fowl.
(2):
(n.) One who rives or splits.
(3):
(n.) Fig.: A large stream; copious flow; abundance; as, rivers of blood; rivers of oil.
(4):
(n.) A large stream of water flowing in a bed or channel and emptying into the ocean, a sea, a lake, or another stream; a stream larger than a rivulet or brook.