Noun
- 1. quassia, organic compound
- usage: a bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood and bark of trees of the genera Quassia and Picrasma
- 2. quassia, bitterwood, Quassia amara, bitterwood tree
- usage: handsome South American shrub or small tree having bright scarlet flowers and yielding a valuable fine-grained yellowish wood; yields the bitter drug quassia from its wood and bark
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