quassia

noun

a tropical American shrub or small tree (Quassia amara) having bright scarlet flowers and yielding a fine-grained, yellowish-white wood
the wood of Quassia amara
a drug from the heartwood and bark of various tropical trees of the ailanthus family used especially as a bitter tonic and remedy for roundworms in children and as an insecticide
any plant of the genus Quassia