/ Dictionary / Index T Tupi: Meaning and Definition of Find definitions for: Tu•pi Pronunciation: (t-pē', t'pē), [key] — pl. -pis, -pi a member of any of several related Indian peoples living in the valleys of various Brazilian rivers, esp. the Amazon. the language spoken in northern Brazil by the Tupi Indians. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tupi (Thesaurus) tupelo Tupi-Guarani Related Content Daily Word Quiz: frowzy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language