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.