the GNU version of the Collaborative International Dictionary of English
n. A plain. See pampas.
The Century Dictionary and Cyclopedia
n. A vast treeless plain such as characterizes the region lying south of the forest-covered belt of the Amazon valley, especially in the Argentine Republic: so called in the southern part of South America.
Word Usage
"The word pampa, of Araucanian origin, signifies grass plain, and justly applies to the whole region."