• WordNet 3.6
    • n stoneroot erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States
    • ***
Webster's Revised Unabridged Dictionary
    • n Stoneroot (Bot) A North American plant (Collinsonia Canadensis) having a very hard root; horse balm. See Horse balm, under Horse.
    • ***
Century Dictionary and Cyclopedia
    • n stoneroot See horse-balm and heal-all.
    • ***