from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A subdivision of Tupi-Guarani that includes Tupi.
- n. A member of a Tupian-speaking people.
- adj. Of or relating to Tupian or to a Tupian-speaking people.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of the Tupi, pertaining to the Tupi or Tupi peoples.
from the GNU version of the Collaborative International Dictionary of English
- adj. 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.
Sorry, no etymologies found.
I might not have spotted this for a while, since this was my first field experience except that my wife, Keren Everett, speaks a Tupi language, Sateré, and told me that those words could not be Pirahã unless Pirahã was Tupian.
But page 65 he writes: Martius's error is not as difficult to understand as it might first appear, i.e. that anyone could think that Pirahã vocabulary is/was Tupian.
Here he gathered a number of Indians of various tribes, Pano and Setebo of cognate stock, Cocama and others of Tupian stock.
Its name comes from the European adaptation of the Tupian word '[fruit that] cries or expels water'.