From HomoExcelsior

1. A three-dimensional surface, all points of which are equidistant from a fixed point.
2. A spherical object or figure.
3. A celestial body, such as a planet or star.
4. the sphere of the heavens.
5. Any of a series of concentric, transparent, revolving globes that together were once thought to contain the moon, sun, planets, and stars.
6. The extent of a person's knowledge, interests, or social position.
7. field
8. To form into a sphere.
9. To put in or within a sphere.
10. To surround or encompass.

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