any one of numerous species of elasmobranch fishes of the order plagiostomi, found in all seas.-a rapacious, artful person; a sharper.-trickery; fraud; petty rapine; as, to live upon the shark.-to pick or gather indiscriminately or covertly.-to play the petty thief; to practice fraud or trickery; to swindle.-to live by shifts and stratagems.