means Reflective surfaces, usually polished glass backed with metal, that bounce light back to show you an image of whatever stands before them.

from From Old French 'mirour,' which traces back to Latin 'mirari,' meaning 'to wonder at' or 'to admire' — the same root that gives us 'miracle' and 'admire.' So a mirror is, quite literally, a thing of wonder: a surface you gaze into and marvel. The deeper Latin verb 'mirari' grew from a sense of looking with astonishment, which feels apt for an object built to make us stare at ourselves.