Tupian \Tu"pi*an\, a.
Designating, or pertaining to, a linguistic stock of South
American Indians comprising the most important Brazilian
tribes. Agriculture, pottery, and stone working were
practiced by them at the time of the conquest. The Tupi and
the Guarani were originally the most powerful of the stock,
which is hence also called {Tupi-Guaranian}.
[Webster 1913 Suppl.]