pentacle
/ˈpentəkl/noun
1- a talisman or magical object, typically disc-shaped and inscribed with a pentagram or other figure, and used as a symbol of the element of earth（尤指扁圆形, 刻有五角形或其他图案, 作为象征土要素的）护身符; 辟邪物; 有魔力的物体。
1.2
pentacles
one of the suits in some tarot packs, corresponding to coins in others（塔罗纸牌中的）五角形花色的牌。
词源
late 16th cent.: from medieval Latin pentaculum, apparently based on Greek penta- 'five'.