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.
Any of the 8 celestial bodies which orbit the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune (a celestial body that fits the 2006 IAU definition of planet).
Any planet that is significantly larger and more massive than Earth, containing large amounts of hydrogen and helium, such as Jupiter and Neptune.