[{"Bold_text": "noun", "List Items": ["a shrub or small tree,Quassia amara,of tropical America, having pinnate leaves, showy red flowers, and wood with a bitter taste.Compare quassia family quassia family.", "any of several other trees having bitter-tasting wood.", "Also called bitterwood .Chemistry, Pharmacology.a prepared form of the heartwood of any of these trees, used as an insecticide and in medicine as a tonic to dispel intestinal worms."]}]