[orb] n [ME, fr. MF orbe, fr. L orbis circle, disk, orb] (14c) 1: any of the concentric spheres in old astronomy surrounding the earth and carrying the celestial bodies in their revolutions
2. archaic: something circular: circle, orbit
3: a spherical body; esp: a spherical celestial object
4: eye
5: a sphere surmounted by a cross symbolizing kingly power and justice
[2]orb vt (1600) 1: to form into a disk or circle
2. archaic: encircle, surround, enclose ~ vi, archaic: to move in an orbit