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

Examples of bluegrass in a Sentence

Recent Examples on the Web

Other music genres represented include bluegrass, country, and hardcore. —Audrey Gibbs, The Tennessean, 3 Sep. 2025

The longtime venue specializes in intimate listening room-style performances where audience members crowd around cabaret tables to hear bluegrass, Americana, classical, blues, and jazz music. —Tara Massouleh McCay, Southern Living, 1 Sep. 2025

His bluegrass roots also shine throughout the project. —Jessica Nicholson, Billboard, 29 Aug. 2025

Stroll through downtown Morgan Hill, plus taste fine whiskeys from around the world, listen to bluegrass and/or roll cigars. —Kate Bradshaw, Mercury News, 28 Aug. 2025

Word History

First Known Use

1751, in the meaning defined at sense 1

Phrases Containing bluegrass

• Kentucky bluegrass
• rough bluegrass

Rhymes for bluegrass

• alas
• amass
• bromegrass
• bypass
• chagas
• crabgrass
• crevasse
• eelgrass
• eyeglass
• groundmass
• harass
• impasse

Kids Definition

bluegrass

noun

blue·​grass -ˌgras 

1

: any of several grasses with usually bluish green stems

especially : Kentucky bluegrass

2

: country music played on a small group of instruments (as banjo, fiddle, and mandolin) with melody or harmony often made up by players during a performance

Geographical Definition

Bluegrass

geographical name

Blue·​grass ˈblü-ˌgras 

region of central Kentucky where Kentucky bluegrass abounds that is noted for the breeding of fine horses