buffalo grass

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A mat-forming perennial grass (Buchloe dactyloides) native to the plains of central North America, important as a forage grass and sometimes used for lawns.

Century Dictionary and Cyclopedia

1. n. A common name for several low grasses very prevalent upon the plains east of the Rocky Mountains, including Buchloë dactyloides, a diœcious species, and Bouteloua oligostachya, with others of the same genus.

Wiktionary

1. n. Bouteloua dactyloides.
2. n. Hierochloe odorata, family Poaceae, sweetgrass.
3. n. Anthoxanthum odoratum, sweet vernal grass, vanilla grass.
4. n. Stenotaphrum secundatum, Saint Augustine grass.
5. n. Panicum maximum, Guinea grass.

GNU Webster's 1913

1. n. (Bot.), [U.S.] a species of short, sweet grass (Buchloë dactyloides), from two to four inches high, covering the prairies on which the buffaloes, or bisons, feed.

WordNet 3.0

1. n. short grass growing on dry plains of central United States (where buffalo roam)
2. n. low mat-forming grass of southern United States and tropical America; grown as a lawn grass