Bluegrass - Definition and Overview

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, IL and Louisville, KY.