noun. a star with 5 points; formed by 5 straight lines between the vertices of a pentagon and enclosing another pentagon.
1. Noun, singular or mass Move the ruler again and draw a fifth line connecting the third mark back to the first mark, completing the pentagram. 2. Adjective The points of the pentagram mean earth, fire, water, air and spirit, and, when used as a protective symbol, have nothing to do with Satan.