Definition of pacu in English:


Pronunciation /ˈpako͞o/ /ˈpæku/ /paˈko͞o/ /pæˈku/


  • A deep-bodied, herbivorous freshwater fish native to northern South America.

    Colossoma nigripinnis, family Characidae

    ‘Are the vegetarian pacu's teeth different from the carnivorous piranha's teeth?’
    • ‘The introduction of these exotic species, such as the pacu, can have detrimental effects for native species inhabiting South Carolina waters.’
    • ‘Additionally, full-grown pacu are much larger than piranha.’


Early 19th century from Tupi pacú.