noun \pi-ˌrär-ə-ˈkü\

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


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