1a:  the act or power of seeing: sight   b:  the special sense by which the qualities of an object (such as color, luminosity, shape, and size) constituting its appearance are perceived through a process in which light rays entering the eye are transformed by the retina into electrical signals that are transmitted to the brain via the optic nerve

2a:  something seen in a dream, trance, or ecstasy; especially:  a supernatural appearance that conveys a revelation  b: a thought, concept, or object formed by the imagination  c:  a manifestation to the senses of something immaterial.

3a:  the act or power of imagination b(1):  mode of seeing or conceiving (2):  unusual discernment or foresight a person ofvision  c:  direct mystical awareness of the supernatural usually in visible form

4a:  something seen  b:  a lovely or charming sight