apotropaic magic

Medieval apotropaic marking on the inside of a church in Suffolk, England

Apotropaic magic (From Ancient Greek: ἀποτρέπω, romanized: apotrépō, lit. 'to ward off') or protective magic is a type of magic intended to turn away harm or evil influences, as in deflecting misfortune or averting the evil eye. Apotropaic observances may also be practiced out of superstition or out of tradition, as in good luck charms (perhaps some token on a charm bracelet), amulets, or gestures such as crossed fingers or knocking on wood, or as part of complex rituals of social transformation such as migration. Many different objects and charms are used for protection by many peoples throughout history.