pen·ta·gram
noun/ˈpentəɡræm/
/ˈpentəɡræm/
- a flat shape of a star with five points, formed by five straight lines. Pentagrams are often used as magic symbols.
Topics Colours and Shapesc2五角星形(常用于象征魔力) Word Originmid 19th cent.: from Greek pentagrammon (see penta- and gram, sense 2).