pen·ta·cle /ˈpɛntɪkəl/
 五芒星形


 Pen·ta·cle n.  A five-pointed star, also called a pentagram or pentalpha.  See illustr. under pentalpha.  Sometimes referring to a similar figure, such as the figure composed of two equilateral triangles intersecting so as to form a six-pointed star.  It was used in early ornamental art, and also with superstitious import by the astrologers and mystics of the Middle Ages.  The six-pointed star is more comonly called a hexagram, or called Solomon's seal; it resembles the star of David (Magen David)

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 pentacle
      n : a star with 5 points; formed by 5 straight lines between the
          vertices of a pentagon and enclosing another pentagon
          [syn: pentagram]