piranha

from WordNet (r) 3.0 (2006)
piranha
    n 1: someone who attacks in search of booty [syn: {marauder},
         {predator}, {vulture}, {piranha}]
    2: small voraciously carnivorous freshwater fishes of South
       America that attack and destroy living animals [syn:
       {piranha}, {pirana}, {caribe}]
    

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