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Webster 1913 Edition
Blue grass
Blue′ grassˊ
.(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.