quassia
Concise Oxford English Dictionary © 2008 Oxford University Press:
quassia /ˈkwɒʃə, ˈkwɒʃɪə, ˈkwasɪə/
▶noun a South American shrub or small tree whose wood, bark, or root yields a medicinal tonic, insecticide, and vermifuge. [Quassia amara and other species.]
– origin named after Graman Quassi, the 18th-cent. Surinamese slave who discovered its medicinal properties.
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