noun bis·tort \ˈbis-ˌtȯrt, bis-ˈ\

Definition of bistort

  1. :  any of several polygonums; especially :  a Eurasian perennial herb (Polygonum bistorta) with twisted roots used as astringents

Origin and Etymology of bistort

Medieval French bistorte, from Medieval Latin *bistorta, from Latin bis + torta, feminine of tortus, past participle of torquēre to twist — more at torture

First Known Use: 1578

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