English Reference

Word

bluegrass

Phoneticsblue·grass, stress on the first syllable

US/ˈbɫuˌɡɹæs/

UK/blˈuːɡɹɑːs/

Definitions

01music genre

B2 · Upper Intermediate Uncountable noun Music

n. a style of American country music played on acoustic instruments like the banjo, fiddle, and mandolin.

n. a subgenre of American roots music characterized by acoustic stringed instruments, high-pitched vocals, and fast-paced improvisation.

“We spent the whole weekend at a bluegrass festival listening to amazing banjo players.”

“The band blended traditional bluegrass with modern jazz elements, creating a sound that appealed to both purists and younger audiences.”

Usage

Usually uncountable when referring to the genre.

Synonyms

folk musicroots music

02type of grass

C1 · Advanced Uncountable noun Technical

n. a common type of grass with bluish-green stems, often grown in parks and gardens in North America.

n. a species of grass, Poa pratensis, valued for its durability in lawns and pastures, particularly in the eastern United States.

“Kentucky is famous for its beautiful fields of bluegrass.”

“The landscaper recommended a hardy variety of bluegrass for the new park because it withstands heavy foot traffic well.”

Usage

Can be countable when referring to specific botanical varieties.

Synonyms

meadow grass

Real-World Examples

“The first bluegrass album in more than 22 years to debut at the top of the US album sales chart, it confirmed him as the genre’s biggest crossover star in decades.”
The Guardian 27 Aug 2026
“A thrilling blend of speedy bluegrass with raw, growling energy, its lyrics are home to a splendid celebration of “mattress dancin”.”
The Guardian 24 Sept 2026

Etymology

From blue + grass, from the bluish appearance of the massed grass in late Spring.

From the band Blue Grass Boys, led by Bill Monroe; bluegrass is first attested in print in reference to the genre of music in 1956.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

Domain

Music

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
Frequency
Occasional
Level
C1 · Advanced
Updated

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English Reference