eu ‧ ca ‧ lyp ‧ tus /ˌjuːkəˈlɪptəs/ BrE AmE noun [uncountable and countable]
[ Date: 1800-1900 ; Language: Modern Latin ; Origin: eu- 'well, good' (from Greek ey , eu 'good' ) + Greek kalyptos 'covered' ; from the covering on the tree's buds ]
a tall tree that produces an oil with a strong smell, used in medicines