What is the meaning of Mirror?

A smooth surface, usually made of glass with reflective material painted on the underside, that reflects light so as to give an image of what is in front of it.

An object, person, or event that reflects or gives a picture of another.

A website or server that contains replicated data from another site.

A mirror carp.

A kind of political self-help book, advising kings, princes, etc. on how to behave.

To reflect, as in a mirror.

To act as a reflection of, either by being identical to, or by being identical but reversed.

Of an event, activity, behavior, to be identical to; to be a copy of; to imitate closely.

To create something identical to (a website, etc.).

mirror (replica of other websites)

Source: wiktionary.org