betony

from The Collaborative International Dictionary of English v.0.48

Betony \Bet"o*ny\, n.; pl. {Betonies}. [OE. betony, betany, F.
   betoine, fr. L. betonica, vettonica.] (Bot.)
   A plant of the genus {Betonica} (Linn.).
   [1913 Webster]

   Note: The purple or wood betony ({Betonica officinalis},
         Linn.) is common in Europe, being formerly used in
         medicine, and (according to Loudon) in dyeing wool a
         yellow color.
         [1913 Webster]