1.a hollow sphere representing Earth and illustrated with the continents, seas, and islands, especially one showing and labeling the countries
3.a rounded hollow object, especially one made of glass, e.g. a cover for a lamp, or a goldfish bowl
4.a hollow sphere, usually made of gold or another precious metal, that forms part of a monarch's regalia and symbolizes the power or sovereignty of the ruler
5.a round ball that has a map of the world on it