A framed mirror showing a jug.

A fish pond acting as a mirror to reflect views of people.

A mirror or looking-glass is something that reflects light. One common plane mirror is a piece of special flat glass that a person can look into to see a reflection of themselves or what is behind them.

Marie Wandscheer: 'Before the Ball' (1886)

Sometimes, a flat piece of metal or the surface of water can act like a mirror.

You can see yourself in a mirror because light comes in and is reflected.