Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Any of several trees in the genus Eucalyptus of Australia, especially E. globulus, a tall timber tree having smooth bark that peels off in strips and lance-shaped aromatic leaves.
1. (Plants) a tall fast-growing widely cultivated Australian myrtaceous tree, Eucalyptus globulus, having aromatic leaves containing a medicinal oil, bark that peels off in shreds, and hard timber. The juvenile leaves are bluish in colour
2. (Plants) any of several other eucalyptus trees
a large, extensively planted eucalyptus, Eucalyptus globulus.