'Bistort' definitions:
- Bistort \Bis"tort\, n. [L. bis + tortus, p. p. of torquere to
twist: cf. F. bistorte.] (Bot.)
An herbaceous plant of the genus Polygonum, section
Bistorta; snakeweed; adderwort. Its root is used in
medicine as an astringent.
[1913 Webster]