Bet"o*ny (?), n.; pl. Betonies (#). [OE. betony, betany, F. betoine, fr. L. betonica, vettonica.] Bot.
A plant of the genus Betonica (Linn.).
⇒ The purple or wood betony (B. officinalis, Linn.) is common in Europe, being formerly used in medicine, and (according to Loudon) in dyeing wool a yellow color.
© Webster 1913.