1.A looking-glass or a speculum; any glass or polished substance that forms images by the reflection of rays of light. "And in her hand she held a mirror bright, Wherein her face she often viewèd fair."
2.That which gives a true representation, or in which a true image may be seen; hence, a pattern; an exemplar. "She is mirour of all courtesy." "O goddess, heavenly bright, Mirror of grace and majesty divine."
Mirror plate. (a)A flat glass mirror without a frame.
(b)Flat glass used for making mirrors.
