bluegrass
noun
blue·grass ˈblü-ˌgras
1
: any of several grasses (genus Poa) of which some have bluish-green culms
especially : kentucky bluegrass
2
[from the Blue Grass Boys, performing group, from Bluegrass state, nickname of Kentucky] : country music characterized by the use of unamplified stringed instruments (such as banjo, fiddle, guitar, and mandolin), by free improvisation, and by close usually high-pitched harmony
Love words? Need even more definitions?
Merriam-Webster unabridged



