trigon

noun

1. 1.A triangle.
2. 2.An ancient triangular harp of Oriental origin which had four strings and was often used for banquet music. Also called sabbeka, sackbut, sambuca.
3. 3.A division consisting of three signs.
4. 4.A trine; an aspect of two planets distant 120 degrees from each other.
5. 5.An old ball game played by three people standing in a triangular formation.