contrayerva


contrayerva

(ˌkɒntrəˈjɜːvə) n (Pharmacology) the root of any of several tropical American moraceous plants of the genus Dorstenia, esp D. contrayerva, used as a stimulant and tonic[C17: from Spanish contrayerba, from contra- + yerba grass, (poisonous) plant, from Latin herba; referring to the belief that it was an antidote to poisons]