Animal familiar

A familiar is a witch’s companion, a small animal that helps the witch with magic. The idea of the familiar is a very ancient concept and is generally applied to such creatures as cats, dogs, foxes, toads, snakes, and birds.

Doppelgänger

The ghostly double of a living person. They are generally regarded as harbingers of bad luck. In some traditions, a doppelgänger seen by a person’s friends or relatives portends illness or danger, while seeing one’s own doppelgänger is an omen of death.

Aqueous humour

A thick watery substance that fills the space in the eyeball between the lens and the cornea.