Eucalyptus (noun)

1. Any of numerous trees of the genus Eucalyptus, native to Australia and adjacent islands, having aromatic leaves that are the source of medicinal oils and heavy wood used for construction.
2. The leaves of such a tree, which have a medicinal aroma and are used in infusions and decoctions to relieve respiratory problems.

Origin:

From new latin eucalyptus, from greek ευ- (eu-, "well") + καλύπτω (kalúptō, "cover, conceal"), from καλύπτω (kalúptō, "to cover, conceal") + -τός (-tós, "-e.d")

Examples:

1. The eucalyptus trees were planted along the road to help reduce pollution.
2. The eucalyptus leaves were used to make a soothing tea for colds and flu.
3. Eucalyptus oil is used in many products for its medicinal properties.
4. The heavy wood of the eucalyptus tree was used to build houses.
5. The eucalyptus grove was a favorite spot for picnickers, who enjoyed the cool shade and the scent of the leaves.