| Noun | 1. | fever tree - any of several trees having leaves or barks used to allay fever or thought to indicate regions free of fever |
| 2. | fever tree - 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 | |
| 3. | fever tree - tall fast-growing timber tree with leaves containing a medicinal oil; young leaves are bluish Synonyms: blue gum, Eucalyptus globulus | |
| 4. | fever tree - African tree supposed to mark healthful regions Synonyms: Acacia xanthophloea |