pentacle

1. (Wicca) A pentagram, or a disk with a pentagram on it, especially one that is used for magical or mystical purposes.Examples: "he drew a pentacle or five-pointed star."; "a five-pointed star (pentacle)."; "the figure of the pentacle, or pentagram."

2. (Wicca) A circumscribed pentagram.Examples: "The pentacle—a pentagram enclosed within a surrounding circle—as found as the centre-piece on a witch's altar is often worn as a silver pendant by witches and other neo-pagans alike repesenting their beliefs in the interconnectedness and interdependence of the powers of nature and spirit."; "A pentacle is a pentagram with a circle drawn around it."; "The pentagram becomes a pentacle when it is enclosed within a circle and inscribed on a disc or stone."