hexagram

noun

1. a six-pointed starlike figure formed of two equilateral triangles placed concentrically with each side of a triangle parallel to a side of the other and on opposite sides of the center.
2. Geometry. a figure of six lines.

noun

1. a star-shaped figure formed by extending the sides of a regular hexagon to meet at six points
2. a group of six broken or unbroken lines which may be combined into 64 different patterns, as used in the I Ching