Etymology
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bluegrass (n.)

also blue-grass, music style, 1958, in reference to the Blue Grass Boys, country music band 1940s-'50s, from the "blue" grass (Poa pratensis) characteristic of Kentucky. The grass so called from 1751; Kentucky has been the Bluegrass State at least since 1864; see blue (adj.1) + grass.

updated on October 18, 2022

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