birthwort definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a genus (Aristolochia) of vines of the birthwort family with brownish or purplish -shaped flowers: formerly supposed to be of help in childbirth
designating a family (Aristolochiaceae, order Aristolochiales) of dicotyledonous plants, shrubs, and woody vines, including Dutchman's pipe
birthwort definition by American Heritage Dictionary
Any of several herbs or woody vines of the genus Aristolochia having showy, malodorous, purplish-brown to yellowish flowers with peculiar or unusual shapes. The European species A. clematitis was used as a folk medicine to aid childbirth.