• Webster's Revised Unabridged Dictionary
    • n Ironwort (Bot) An herb of the Mint family (Sideritis), supposed to heal sword cuts; also, a species of Galeopsis.
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Century Dictionary and Cyclopedia
    • n ironwort A plant of the labiate genus Sideritis.
    • n ironwort A plant of the genus Galeopsis, G. Tetrahit.
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In literature:

The goldenrod and purple ironwort were dust-colored and dust-choked.
"At the Foot of the Rainbow" by Gene Stratton-Porter