Main Entry:

blue·grass

Pronunciation:

\-ˌgras\

Function:

noun

Date:

1751

1: any of several grasses (genus Poa) of which some have bluish-green culms ; especially : kentucky bluegrass2 [from the Blue Grass Boys, performing group, from Bluegrass state, nickname of Kentucky] : country music played on unamplified stringed instruments (as banjo, fiddle, guitar, and mandolin) and characterized by free improvisation and close usually high-pitched harmony