noun \ˈbis-ˌtrt, bis-ˈ\

Definition of BISTORT

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

Origin of BISTORT

Middle 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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