piranha

noun
🔊/pɪˈrɑːnə/
🔊/pɪˈrɑːnə/
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  1. a small South American freshwater fish that attacks and eats live animals水虎鱼,锯脂鲤(南美的一种捕食动物的小淡水鱼)Topics Fish and shellfishc1
    Word Originmid 18th cent.: via Portuguese from Tupi-Guarani pirá ‘fish’ + sainha ‘tooth’.