Crone

Stock character; a malicious old woman, often occult or witch-like

In folklore, a crone is an old woman who may be characterized as disagreeable, malicious, or sinister in manner, often with magical or supernatural associations that can make her either helpful or obsolete. As a concept, 'The Crone' is also often associated with the Jungian archetype of the Wise Woman or, if accompanied by 'The Maiden' and 'The Mother', as a member of the Triple Goddess deity archetype.