(1):

(n.) A cheat; one given to sharp practice in trade.

(2):

(v. t.) " To jostle by riding against one."

(3):

(v. t.) To play the jockey toward; to cheat; to trick; to impose upon in trade; as, to jockey a customer.

(4):

(v. i.) To play or act the jockey; to cheat.

(5):

(n.) A professional rider of horses in races.

(6):

(n.) A dealer in horses; a horse trader.