(1):

(v. t. & i.) A rapacious, artful person; a sharper.

(2):

(v. t. & i.) Trickery; fraud; petty rapine; as, to live upon the shark.

(3):

(v. t.) To pick or gather indiscriminately or covertly.

(4):

(v. t. & i.) Any one of numerous species of elasmobranch fishes of the order Plagiostomi, found in all seas.

(5):

(v. i.) To live by shifts and stratagems.

(6):

(v. i.) To play the petty thief; to practice fraud or trickery; to swindle.