Definition of contrayerva
: a tropical American herb (Dorstenia contrayerva) the aromatic root of which was formerly used as a stimulant, tonic, and diaphoretic; also : any West Indian species of Aristolochia similarly used
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Origin and Etymology of contrayerva
Spanish contrayerba, contrahierba, from contra- + yerba, hierba herb, grass, poison, from Latin herba herb; from the belief that it was a poison antidote
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