| Pampas (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. Thesaurus Entries alkali flat, alluvial plain, basin, bottomland, bushveld, campo, champaign, champaign country, coastal plain, delta, desert, down, downs, fell, flat, flat country, flatland, flats, grass, grass veld, grassland, grazing, haugh, haughland, heath, lande, lea, level, llano, lowland, lowlands, lunar mare, mare, mead, meadow, meadow land, mesa, mesilla, moor, moorland, open country, pampa, park, pasturage, pasture, pasture land, peneplain, plain, plains, plateau, playa, prairie, range, salt flat, salt marsh, salt pan, savanna, sebkha, steppe, steppeland, swale, table, tableland, tree veld, tundra, upland, vega, veld, weald, wide-open spaces, wold |