QUASSIA
quassia, bitterwood, Quassia amara
(noun) 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
quassia
(noun) 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
Source: WordNet® 3.1
Etymology
From the genus name.
Noun
quassia (plural quassias)
Any of several tropic trees, of the genus Quassia, having scarlet flowers.
The bitter substance quassin extracted from its bark.
Source: Wiktionary
Quas"si*a, n. Etym: [NL. From the name of a negro, Quassy, or Quash,
who prescribed this article as a specific.]
Definition: The wood of several tropical American trees of the order
Simarubeæ, as Quassia amara, Picræna excelsa, and Simaruba amara. It
is intensely bitter, and is used in medicine and sometimes as a
substitute for hops in making beer.
Source: Webster’s Unabridged Dictionary 1913 Edition