'Mirror plate' definitions:

Definition of 'Mirror plate'

From: GCIDE

Mirror \Mir"ror\, n. [OE. mirour, F. miroir, OF. also mireor, fr. (assumed) LL. miratorium, fr. mirare to look at, L. mirari to wonder. See Marvel, and cf. Miracle, Mirador.] [1913 Webster]
1. A looking-glass or a speculum; any glass or polished substance that forms images by the reflection of rays of light. [1913 Webster]
And in her hand she held a mirror bright, Wherein her face she often view[`e]d fair. --Spenser. [1913 Webster]
2. That which gives a true representation, or in which a true image may be seen; hence, a pattern; an exemplar. [1913 Webster]
She is mirour of all courtesy. --Chaucer. [1913 Webster]
O goddess, heavenly bright, Mirror of grace and majesty divine. --Spenser. [1913 Webster]
3. (Zool.) See Speculum. [1913 Webster]
Mirror carp (Zool.), a domesticated variety of the carp, having only three or fur rows of very large scales side.
Mirror plate. (a) A flat glass mirror without a frame. (b) Flat glass used for making mirrors.
Mirror writing, a manner or form of backward writing, making manuscript resembling in slant and order of letters the reflection of ordinary writing in a mirror. The substitution of this manner of writing for the common manner is a symptom of some kinds of nervous disease. [1913 Webster]