| 1. | a reflecting surface, originally of polished metal but now usually of glass with a silvery, metallic, or amalgam backing. |
| 2. | such a surface set into a frame, attached to a handle, etc., for use in viewing oneself or as an ornament. |
| 3. | any reflecting surface, as the surface of calm water under certain lighting conditions. |
| 4. | Optics. a surface that is either plane, concave, or convex and that reflects rays of light. |
| 5. | something that gives a minutely faithful representation, image, or idea of something else: Gershwin's music was a mirror of its time. |
| 6. | a pattern for imitation; exemplar: a man who was the mirror of fashion. |
| 7. | a glass, crystal, or the like, used by magicians, diviners, etc. |
| 8. | to reflect in or as if in a mirror. |
| 9. | to reflect as a mirror does. |
| 10. | to mimic or imitate (something) accurately. |
| 11. | to be or give a faithful representation, image, or idea of: Her views on politics mirror mine completely. |
| 12. | Music. (of a canon or fugue) capable of being played in retrograde or in inversion, as though read in a mirror placed beside or below the music. |
| 13. | with mirrors, by or as if by magic. |