Kentucky blue grass

from The Collaborative International Dictionary of English v.0.48

Kentucky \Ken*tuck"y\, prop. n.
   One of the United States.
   [1913 Webster]

   {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.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

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).
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Blue grass \Blue" grass`\ (Bot.)
   A species of grass ({Poa compressa}) with bluish green stems,
   valuable in thin gravelly soils; wire grass.
   [1913 Webster]

   {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.
      [1913 Webster]