Dictionary
Cha•co
Pronunciation: (chä'kô), [key]—
n.
1. a part of the Gran Chaco region in central South America, in Bolivia, Paraguay, and Argentina. ab. 100,000 sq. mi. (259,000 sq. km).
2. See
Gran Chaco. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.