The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of several plants of the widespread genus Stachys in the mint family, especially S. officinalis, native chiefly to Europe and having spikes of usually reddish-purple flowers. It was once popular in herbal medicine. Also called woundwort.
the GNU version of the Collaborative International Dictionary of English
n. A plant of the genus Betonica (Linn.).
The Century Dictionary and Cyclopedia
n. The popular name of Stachys Betonica or Betonica officinalis, a European labiate plant, growing in woods.
Word Usage
"“Bet it is just wintergreen, feverfew, and betony, mixed with something sweet—and now he will make a fortune,” Teddy said, reading the account in the Gazette."