Pentacle
(n.) A figure composed of two equilateral triangles intersecting so as to form a six-pointed star, -- used in early ornamental art, and also with superstitious import by the astrologers and mystics of the Middle Ages.
Similar Words:
Arpentator Irrepentance Penta- Pentabasic Pentacapsular Pentachenium Pentachloride Pentachord Pentacid Pentacle