Definition of pirarucu
: a very large edible bony fish (Arapaima gigas of the family Osteoglossidae) of the rivers of northern South America
Origin of pirarucu
Portuguese, from Tupi pirawrukú, from pirá fish + urukú annatto
First Known Use: 1840
Learn More about pirarucu
Britannica.com: Encyclopedia article about "pirarucu"
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