Bĕt'o-ny, n.

n. [Fr. bétoine, Lat. betonica, vettonica,] (Bot.) A plant of the genus Betonica (Linn.).

The purple or wood betony (B. officinalis, Linn.) grows in shady places, and was formerly used in medicine as a mild corroborant: it is also used to dye wool of a fine dark-yellow color. Loudon.