Diabolical mark

According to witch-hunters during the height of the witch trials, the witches’ mark (not to be confused with a witches' teat) indicated that an individual was a witch. The witches' mark and the devil's mark are both terms applied to essentially the same mark. The beliefs about the mark differ depending on the trial location and the accusation made against the witch. Evidence of the witches’ mark is found earliest in the 16th century, and reached its peak in 1645, then essentially disappeared by 1700. The Witch or Devil's mark was believed to be the permanent marking of the Devil on his initiates to seal their obedience and service to him. He created the mark by raking his claw across their flesh, or by making a blue or red brand using a hot iron. Sometimes, the mark was believed to have been left by the Devil licking the individual. The Devil was thought to mark the individual at the end of nocturnal initiation rites. The witches' teat was a raised bump somewhere on a witch's body. It is often depicted as having a wart-like appearance.

Apotropaic marks, made to keep witches out of buildings, are also referred to as witches' marks. Such marks have been found in buildings across England, on doors, in timbers, or scratched on stone walls.

The witches' teat is associated with the perversion of maternal power by witches in early modern England. The witches' teat is associated with the feeding of witches' imps or familiars; the witch's familiar supposedly aided the witch in her magic in exchange for nourishment (blood) from sacrificial animals or from the witch's teat. It is also where the devil supposedly suckles when he comes at night to bed his faithful servants, sometimes impregnating them with his seed. Once the devilish half-breed has been conceived, the cambion may only feed upon this teat and no other. Folklore suggests that on the 7th day of the 7th week of consecutive feeding upon the teat, the cambion would grow to adulthood immediately and begin wreaking havoc with a range of demonic powers inherited from its supernatural father. However, should the ritual be disrupted during the 49-day period, the process has to restart all over again.

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Wikipedia