Definition of bistort
: any of several polygonums; especially : a Eurasian perennial herb (Polygonum bistorta) with twisted roots used as astringents
Origin and Etymology of bistort
Middle French bistorte, from Medieval Latin *bistorta, from Latin bis + torta, feminine of tortus, past participle of torquēre to twist — more at 1torture
First Known Use: 1578
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