'Birthroot' definitions:

Definition of 'birthroot'

From: WordNet
noun
Trillium of eastern North America having malodorous pink to purple flowers and an astringent root used in folk medicine especially to ease childbirth [syn: purple trillium, red trillium, birthroot, Trillium erectum]

Definition of 'Birthroot'

From: GCIDE
  • Birthroot \Birth"root`\, n. (Bot.) An herbaceous plant (Trillium erectum), and its astringent rootstock, which is said to have medicinal properties. [1913 Webster]