noun

1. any round body or figure having the surface equally distant from the center at all points; globe; ball
2. a star, planet, etc.
3. the visible heavens; sky
4. celestial sphere
5. any of a series of hypothetical spherical shells, transparent, concentric, and postulated as revolving one within another, in which the stars, planets, sun, moon, etc. were supposedly set: a concept of ancient astronomy
6. the place, range, or extent of action, existence, knowledge, experience, influence, etc.; province; compass
7. social stratum; place in society; walk of life

Etymology: ME spere < OFr espere < L sphaera < Gr sphaira

transitive verb sphered, sphering spher′·ing

1. to put in or as in a sphere
2. to put among the heavenly spheres
3. to form into a sphere