Bluegrass

Bluegrass has three principal meanings, the second two both deriving from the first listed.

Bluegrass is a genus of grasses, Poa.
Bluegrass music is a form of American roots music.
The Bluegrass region is an area of Kentucky and Ohio states, USA.
The Bluegrass was a named passenger train operated by the Monon railroad between Chicago and Louisville.

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Bluegrass

See also: Bluegrass, American roots music, Bluegrass (grass), Bluegrass music, Bluegrass region, Chicago, Kentucky, List of named passenger trains, Louisville, Kentucky