Kentucky bluegrass

Century Dictionary and Cyclopedia

1. n. See blue-grass.

GNU Webster's 1913

1. a species of grass (Poa pratensis) which has running rootstocks and spreads rapidly. It is valuable as a pasture grass, as it endures both winter and drought better than other kinds, and is very nutritious.
2. n. (Bot.) a valuable pasture and meadow grass (Poa pratensis), found in both Europe and America. See under Blue grass.

WordNet 3.0

1. n. valuable meadow and pasture grass in Europe and especially central United States having tall stalks and slender bright green leaves; a chief constituent in lawn grass mixtures