fever tree

Definition
(noun) any of several trees having leaves or bark used to allay fever or thought to indicate regions free of fever Definition
(noun) ornamental shrub or small tree of swampy areas in southwestern United States having large pink or white sepals and yielding Georgia bark for treating fever Definition
(noun) tall fast-growing timber tree with leaves containing a medicinal oil; young leaves are bluish Definition
(noun) African tree supposed to mark healthful regions