any of various grasses of the genus Poa
"The farmer harvested bluegrass, a type of grass from the genus Poa, to feed his livestock during the dry summer months."
an area in central Kentucky noted for its bluegrass and thoroughbred horses
"The couple traveled to Bluegrass country in search of a quiet farm where they could ride their new thoroughbreds."
a type of country music played at a rapid tempo on banjos and guitars
"The lively band kicked off their set with an upbeat bluegrass tune featuring fast-paced banjo picking."
Kentucky bluegrass, Poa pratensis.
"The old barn was filled with the lively sound of bluegrass as the musicians played their banjos and fiddles without a single drum in sight."
A style of country music with roots in Scots-Irish Appalachian folk music, blues, and jazz and characterized by banjos, fiddles, acoustic guitars, dobros, and mandolins; but containing no drums, electric guitars, pianos or other keyboard or wind instruments.
In plain English: Bluegrass is an upbeat type of American country music played on instruments like guitars and fiddles that originated in Kentucky.
"We spent the afternoon listening to live bluegrass music at the local festival."
Usage: Bluegrass refers to a specific genre of American folk music known for its fast tempos and prominent use of the banjo and mandolin. When discussing this musical style, it is distinct from general country or Appalachian folk due to its unique instrumentation and rhythmic drive.
The word combines "blue" and "grass" to describe the bluish tint that tall fescue grass takes on during late spring. This name was coined specifically because of this unique seasonal coloration rather than any other characteristic of the plant.