Birthroot

noun

2. In botany, a name given to various species of Trillium, especially T. pendulum, the roots of which are reputed to be astringent, tonic, and alterative, and to have a special effect upon the uterus and connected organs. Also called birthwort, and corruptly bethroot and bathwort.
3. An herbaceous plant (Trillium erectum), and its astringent rootstock, which is said to have medicinal properties.
4. Trillium erectum, a perennial plant of North America with deep-red flowers.
5. trillium of eastern North America having malodorous pink to purple flowers and an astringent root used in folk medicine especially to ease childbirth