Pronunciation: (bis'tôrt), [key]
1. Also called snakeweed. a European plant, Polygonum bistorta, of the buckwheat family, having a twisted root, which is sometimes used as an astringent.
2. any of several related plants, as P. viviparum (alpine bistort).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.