(1) Someone who attacks in search of booty
(2) Small voraciously carnivorous freshwater fishes of South America that attack and destroy living animals
(1) Some items are curios, such as a necklace of peccary teeth and a piranha jaw fashioned into a cutting tool.
(2) You become fish bait to the school of piranhas circling around.
(3) I would rather throw myself to piranhas than have that reputation.
(4) Two well-known fish with multiple rows of teeth are piranhas and sharks.
(5) She glanced across at her large fish tank, where two piranhas swam back and forth.
marauder
vulture
predator