ˈtüˌpē, ̷ ̷ˈ ̷ ̷ noun
( plural tupi or tupis )
Usage: usually capitalized
1.
a. : a group of Tupi-Guaranian peoples of Brazil especially living in the valleys of the Amazon, Tapajoz, Araguaia, and Xingu
b. : a member of any of such peoples
2. : the language of the Tupi people serving as a lingua franca in the valley of the Amazon