Sigil
A drawn sign or symbol made to stand for a spirit, an intention or a power, from the Latin sigillum, a small seal.
Also: sigillum, seal, magical sign
In medieval and Renaissance grimoires, sigils were the signs attached to named spirits and angels, which a ceremonial magician drew in order to call or bind them. Texts such as the Lesser Key of Solomon and the works attributed to Agrippa carry many examples. In the twentieth century the artist and occultist Austin Osman Spare developed a new use, in which a person turns a written wish into an abstract mark and then looks away from it, a method that chaos magic took up. Today the word is also common in fantasy and games. Historians treat sigils as a form of sign-making that links writing, belief and craft.