Any spherical (or nearly spherical) object.
The planet Earth.
A circular military formation used in Ancient Rome, corresponding to the modern infantry square.
A spherical model of Earth or other planet.
A land snail of the genus Mesodon
A light bulb.
A woman's breast.
To become spherical.
To make spherical.
Any representation of part of a sphere on a plane surface
Any of several charts of the celestial sphere having an overlay or window that may be adjusted to show the stars visible at a particular time, or from a particular place