A type of evergreen tree that is a member of the myrtle family. Oil from the leaves is used in very small amounts in mouthwash and in medicines and candy used to treat and soothe sore throats and coughs. It has also been used in some cultures to treat many other medical problems. The scientific name is Eucalyptus globulus. OR  The kingdom that describes ALLorganisms (plants, fungi, animals, fish, birds, etc.) that have an organized nucleus surrounded by a nuclear membrane. The other major kingdom is the Procaryotes (containing only the primitive bacteria and Archae)