Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Any of various grasses of the genus Poa, having bluish spikelets, including species such as Kentucky bluegrass that are used for pastures and lawns and others that are considered weeds.
  • noun Music A type of country music that originated in the southern United States, typically played on acoustic stringed instruments and characterized by rapid tempos and jazzlike improvisation.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun countable Kentucky bluegrass, Poa pretensis.
  • noun uncountable A style of country music with roots in Scots-Irish Appalachian folk music, blues, and jazz. Characterized by banjos, fiddles, and mandolins, but containing no drums.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From blue + grass

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Examples

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  • traditionally, a genre of old-time and mountain music played on acoustic instruments with alternating leads and sung in multi-part harmonies

    April 2, 2007

  • According to B.C. Comic's Wiley's Dictionary: The result of running over a smurf picnic with your lawnmower.

    March 18, 2010