Definition:
quassia
- quassiaany of several other trees having bitter-tasting wood
- quassiaprepared form of the heartwood of any of these trees, used as an insecticide and in medicine as a tonic to dispel intestinal worms
- quassiashrub or small tree, Quassia amara, of tropical America, having pinnate leaves, showy red flowers, and wood with a bitter taste