pentagram
noun [ C ] uk/ˈpen.tə.ɡræm/ us/ˈpen.t̬ə.ɡræm/
（象征魔力、神秘等的）五角形符号
a star with five points, drawn using five straight lines, sometimes used as a symbol of magic
He said he was interested in the occult, which explained the pentagram tattoo. 他说自己对神秘学感兴趣，这就是他身上五角形纹身的原因。