contrayerva
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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]
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