(photography) Any undesired image appearing at the image plane of an optical system; either a false image of the desired object, or an out-of-focus image of a bright source of light in the field of the optical system.

(computing) A copy of all the contents of a hard drive, used as a backup.

The subjective inner picture of one's outward physical appearance.

(colloquial) The exact likeness (of someone).

That part of an optical system where real or virtual images are formed

plural of mirror image

(databases, IBM) A backup copy of a database in a format that may be used, along with incremental logs, to recreate the database after a hardware failure

(computing) A copy of all or part of a disk drive retained for backup or replication purposes.

(computing) The master disk image used in the initialization of VMs, hard disks, etc.

(now chiefly historical) The use of visual or plastic representations of people, spirits etc., for magical purposes.