[1] : The Collaborative International Dictionary of English v.0.48

betony \bet"ony\, 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
see also:
betonies betonica betonica officinalis 

Betony >> B Words
Betony, definition of term: Betony
betony_pag1.html