Talisman
Talisman , noun
[Sp., from Arabic tilism, tilsam, a magical image, pl. tilsamān, from Greek {not transcribed} tribute, tax, LGr., an initiation, incantation, from {not transcribed} to complete, perform, to play taxes, to make perfect, to initiate, especially in the mysteries, from {not transcribed} completion, end.]
1.
A magical figure cut or engraved under certain superstitious observances of the configuration of the heavens, to which wonderful effects are ascribed; the seal, figure, character, or image, of a heavenly sign, constellation, or planet, engraved on a sympathetic stone, or on a metal corresponding to the star, in order to receive its influence.
2.
Hence, something that produces extraordinary effects, esp. in averting or repelling evil; an amulet; a charm; as, a talisman to avert diseases. — Swift