1. In astronomy, the path described by a heavenly body in its periodical revolution around another body; such as, the orbit of Jupiter, of the earth, of the moon.
2. An orb or ball. "Roll the lucid orbit of an eye."
3. In anatomy, the cavity or socket of the skull in which the eye and its appendages are situated.
4. In zoology, the skin which surrounds the eye of a bird.