an extensive, level or slightly undulating, mostly treeless tract of land in the Mississippi valley, characterized by a highly fertile soil and originally covered with coarse grasses, and merging into drier plateaus in the west. Compare pampas , savanna , steppe .

a tract of grassland; meadow.

(in Florida) a low, sandy tract of grassland often covered with water.

Southern U.S. wet grassland; marsh.

( initial capital letter ) a steam locomotive having a two-wheeled front truck, six driving wheels, and a two-wheeled rear truck.

noun

grassy field , meadow , pasturage , pasture , plain , savanna , steppe , veldt , grassland , llano , pampa , quamash