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.
Any spherical (or nearly spherical) object.
To become spherical.
To make spherical.
The universe.
A complex structure, such as a society, considered as a single entity that contains numerous similar, smaller-scale structures.