What does bluegrass mean?
Bluegrass is primarily known today as a distinctly American genre of acoustic roots music that emerged in the mid-1940s from the Appalachian region. Built around the banjo, fiddle, mandolin, guitar, and upright bass, it is defined by virtuosic instrumental breaks, driving rhythms, and high, tightly woven vocal harmonies. The name comes from Bill Monroe's band, the Blue Grass Boys, itself a nod to Kentucky, the Bluegrass State. The word also has an older, botanical sense: bluegrass is any of several grasses of the genus Poa — especially Kentucky bluegrass — prized as pasture and lawn turf across North America. In modern usage the musical meaning dominates, typically appearing attributively in phrases like bluegrass band or bluegrass festival. The word carries warm connotations of rural tradition, community picking sessions, and American folk heritage, making it a useful term for anyone writing about music, culture, or gardening.
A genre of American roots music characterized by acoustic stringed instruments such as banjo, fiddle, and mandolin, fast tempos, instrumental virtuosity, and high close vocal harmonies.
"The festival drew bluegrass players from across the Appalachians."
Frequently used attributively before another noun: bluegrass band, bluegrass record.
Any of various grasses of the genus Poa, especially Kentucky bluegrass (Poa pratensis), widely grown as pasture or turf grass in North America.
"Kentucky bluegrass forms a dense, durable sod ideal for lawns and pastures."
Chiefly used in agricultural, horticultural, and regional American contexts.
Rarely used in the plural; the singular covers both senses in most contexts. The plural appears mainly in botanical or agronomic writing when distinguishing multiple species of Poa.
"Several bluegrasses are used in turf mixtures across temperate regions."
Bluegrass music is named not after a grass at all, but after Bill Monroe's backing band, the Blue Grass Boys — themselves named for Monroe's home state, Kentucky, the Bluegrass State.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of bluegrass
The musical sense of "bluegrass" derives from the Blue Grass Boys, the band led by Kentuckian Bill Monroe, whose pioneering sound gave the genre its name in the 1940s; the band's name in turn references Kentucky's nickname, the Bluegrass State, which comes from the blue-green seed heads of the Poa grasses that flourish there. The botanical sense is much older: "grass" descends from Old English "græs," of Germanic origin, and compounds with "grass" have formed naturally in English for centuries. The two senses thus share a common thread through the same native English root.
How bluegrass is actually used
As a musical term, "bluegrass" is often used attributively (bluegrass band, bluegrass festival). The music sense is far more common in everyday usage than the botanical sense, which is largely confined to agricultural, horticultural, and regional American contexts. Both senses are standard English with no informal or slang register restrictions.
Easily confused with bluegrass
"Bluesgrass" is not an established English word; the correct spelling is "bluegrass," named after the Blue Grass Boys, Bill Monroe's band.