Deergrass \Deer"grass`\, n. (Bot.) An American genus (Rhexia) of perennial herbs, with opposite leaves, and showy flowers (usually bright purple), with four petals and eight stamens, -- the only genus of the order Melastomace[ae] inhabiting a temperate clime. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Deergrass \Deer"grass`\, n. (Bot.) An American genus (Rhexia) of perennial herbs, with opposite leaves, and showy flowers (usually bright purple), with four petals and eight stamens, -- the only genus of the order Melastomace[ae] inhabiting a temperate clime.

Source: Webster's Revised Unabridged Dictionary (1913)