A piranha is a small, fierce fish which is found in South America.
piranha in British English
(pɪˈrɑːnə) or piraña (pɪˈrɑːnjə)
noun
any of various small freshwater voracious fishes of the genus Serrasalmus and related genera, of tropical America, having strong jaws and sharp teeth: family Characidae (characins)
Word origin
C19: via Portuguese from Tupi: fish with teeth, from pirá fish + sainha tooth
piranha in American English
(pɪˈrɑnə; pɪˈrænə; pɪˈrɑnjə)
nounWord forms: pluralpiˈranhas or piˈranha
any of various small South American freshwater bony fishes (family Serrasalmidae, order Cypriniformes) having strong jaws and very sharpteeth: they hunt in schools, attacking any animals, including human beings
Word origin
BrazPort < Tupí & Guaraní, toothed fish < pirá, fish + sainha, tooth