• WordNet 3.6
    • n birthwort creeping plant having curving flowers thought to resemble fetuses; native to Europe; naturalized Great Britain and eastern North America
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Webster's Revised Unabridged Dictionary
    • n Birthwort A genus of herbs and shrubs (Aristolochia), reputed to have medicinal properties.
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Century Dictionary and Cyclopedia
    • n birthwort In botany: The common name of the European species of Aristolochia, A. Clematitis, from its supposed remedial powers in parturition, and from it transferred to some American species, which are more usually known as snakeroot.
    • n birthwort Same as birthroot.
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In literature:

Take savine, round birthwort, trochisks of myrrh, castor, cinnamon and saffron, each half a drachm; make a powder, give a drachm.
"The Works of Aristotle the Famous Philosopher" by Anonymous