A five-pointed star drawn with five straight lines.
Can (but not always) contain within itself, but not to be confused with, a pentagon.
Wiccans (a modern witch religion) use a pentagram with three points up as a holy symbol, often drawn within a circle, while Satanists use a inverted pentagram, often inscribed in a double circle with the head of a goat inside the pentagram.
In Japanese culture, this symbol (五芒星) is strongly associated with Abe no Seimei, Japan's most renowned onmyouji.
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