a sphere or globe

a Christmas tree hung with brightly colored orbs.

the eyeball or eye

He looks with blind orbs on an indifferent world.

any of the heavenly bodies, as the sun or moon

He lay on the grass, warmed by that orb of day, the sun.

a globe bearing a cross; the mound or emblem of sovereignty, esp. as part of the regalia of England.

Astrology . the number of degrees from exactness within which an aspect operates.

a circle or something circular.

Astronomy . (formerly) the orbit of a heavenly body.

the earth.

to form into a circle or sphere.

Archaic . to encircle; enclose.

to move in an orbit.

to form into an orb or globe; round out.

noun

ball , circle , eye * , lamp , ring , rondure , round , sphere , band , circuit , disk , gyre , wheel , earth , eye , eyeball , globe , ocular , planet