What is "kentucky blue grass"

Kentucky \Ken*tuck"y\, prop. n. One of the United States.

Kentucky blue grass (Bot.), a valuable pasture and meadow grass ( Poa pratensis), found in both Europe and America. See under Blue grass.

Kentucky coffee tree (Bot.), a tall North American tree ( Gymnocladus Canadensis) with bipinnate leaves. It produces large woody pods containing a few seeds which have been used as a substitute for coffee. The timber is very valuable.

Poa \Po"a\, n. [NL., fr. Gr. ? grass.] (Bot.) A genus of grasses, including a great number of species, as the kinds called meadow grass, Kentucky blue grass, June grass, and spear grass (which see).

Blue grass \Blue" grass`\ (Bot.) A species of grass ( Poa compressa) with bluish green stems, valuable in thin gravelly soils; wire grass.

Kentucky blue grass, 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.