mirror
Pronunciation: /ˈmɪrə/
noun
- a surface, typically of glass coated with a metal amalgam, which reflects a clear image: he checked his appearance in the mirror
- a thing regarded as accurately representing something else: the stage is supposed to be the mirror of life
- (also mirror site) Computing a site on a network which stores the contents copied from another site: the company now has a mirror site in Taiwan
verb
- (of a surface) show a reflection of: the clear water mirrored the sky
- correspond to: his own views mirrored those of his followers
- Computing keep a copy of the contents of (a network site) at another site, typically in order to improve accessibility: his site was mirrored at several colleges around the United States
- (usually as noun mirroring) Computing store copies of data in (two or more hard disks) for protection: the second drive is set up for disk mirroring

Origin:
Middle English: from Old French mirour, based on Latin mirare 'look at'. Early senses also included 'a crystal used in magic' and 'a person deserving imitation'