n. pl. [ Sp., fr. Peruv. pampa a field, plain. ] Vast grass-covered 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 east of the Andes extending from Bolivia to Southern Patagonia. [ 1913 Webster ]

Pampas cat (Zool.), a South American wild cat (Felis pajeros). It has oblique transverse bands of yellow or brown. It is about three and a half feet long. Called also straw cat. --
Pampas deer (Zool.), a small, reddish-brown, South American deer (Cervus campestris syn. Blastocerus campestris). --
Pampas grass (Bot.), a very tall ornamental grass (Gynerium argenteum) with a silvery-white silky panicle. It is a native of the pampas of South America. [ 1913 Webster ]