orb

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A sphere or spherical object.
• noun A celestial body, such as the sun or moon.
• noun Archaic The earth.
• noun One of a series of concentric transparent spheres thought by ancient and medieval astronomers to revolve about the earth and carry the celestial bodies.
• noun A globe surmounted by a cross, used as a symbol of monarchial power and justice.
• noun An eye or eyeball.
• noun Archaic Something of circular form; a circle or orbit.
• intransitive verb To shape into a circle or sphere.
• intransitive verb Archaic To encircle; enclose.
• intransitive verb To move in an orbit.

from The Century Dictionary.

• To inclose as in an orb; encircle; surround; shut up.
• To move as in a circle; roll as an orb: used reflexively.
• To form into a circle or sphere; make an orb.
• To become an orb or like an orb; assume the shape, appearance, or qualities of a circle or sphere; fill out the space of a circle or sphere; round itself out.
• Bereaved, especially of children.
• noun A blank window or panel.
• noun A circle; a circular surface, track, path, or course; an orbit; a ring; also, that which is circular, as a shield: as, the orb of the moon.
• noun A sphere or spheroidal body; a globe; a ball.
• noun Hence The earth or one of the heavenly bodies; in particular, the sun or the moon.
• noun The eye; an eyeball: so called from its spheroidal shape, and the comparison between its luminous brilliancy and that of the stars.
• noun A hollow globe; specifically, in ancient astronomy, a hollow globe or sphere supposed to form part of the solar or sidereal system.
• noun The globe forming part of royal regalia; the monde or mound.
• noun In astrology, the space within which the astrological influence of a planet or of a house is supposed to act.
• noun In architecture, a plain circular boss. See boss, 5.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Arch.), obsolete A blank window or panel.
• intransitive verb Poetic To become round like an orb.
• transitive verb Poetic To form into an orb or circle.
• transitive verb Poetic To encircle; to surround; to inclose.
• noun A spherical body; a globe; especially, one of the celestial spheres; a sun, planet, or star.
• noun One of the azure transparent spheres conceived by the ancients to be inclosed one within another, and to carry the heavenly bodies in their revolutions.
• noun A circle; esp., a circle, or nearly circular orbit, described by the revolution of a heavenly body; an orbit.
• noun rare A period of time marked off by the revolution of a heavenly body.
• noun Poetic The eye, as luminous and spherical.
• noun Poetic A revolving circular body; a wheel.
• noun A sphere of action or influence.
• noun Same as Mound, a ball or globe. See 1st Mound.
• noun (Mil.) A body of soldiers drawn up in a circle, as for defense, esp. infantry to repel cavalry.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A spherical body; a globe; especially, one of the celestial spheres; a sun, planet, or star
• noun One of the azure transparent spheres conceived by the ancients to be inclosed one within another, and to carry the heavenly bodies in their revolutions
• noun A circle; especially, a circle, or nearly circular orbit, described by the revolution of a heavenly body; an orbit
• noun rare A period of time marked off by the revolution of a heavenly body. --John Milton
• noun poetic The eye, as luminous and spherical
• noun poetic A revolving circular body; a wheel
• noun rare A sphere of action. --William Wordsworth
• noun A globus cruciger
• noun A translucent sphere appearing in flash photography
• verb poetic to form into an orb or circle
• verb poetic (transitive) to encircle; to surround; to inclose
• verb poetic (intransitive) to become round like an orb