Pampas

Webster's Dictionary

(n. pl.) Vast plains in the central and southern part of the Argentine Republic in South America. The term is sometimes used in a wider sense for the plains extending from Bolivia to Southern Patagonia.

The Nuttall Encyclopedia

Vast grassy, treeless, nearly level plains in South America, in the Argentine State; they stretch from the lower Paraná to the S. of Buenos Ayres; afford rich pasture for large herds of wild horses and cattle, and are now in certain parts being brought under tillage.