Webster's Revised Unabridged Dictionary · 1913

Blue grass

Blue grass ({not transcribed})

(Botany) A species of grass (Poa compressa) with bluish green stems, valuable in thin gravelly soils; wire grass.
Collocations (1)
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.