What is the meaning of Trigon?

A triangle.

An ancient triangular harp of Oriental origin which had four strings and was often used for banquet music. Also called sabbeka, sackbut, sambuca.

A division consisting of three signs.

A trine; an aspect of two planets distant 120 degrees from each other.

An old ball game played by three people standing in a triangular formation.

The cutting region of the crown of an upper molar, usually the anterior part.

Romanization of 𐍄𐍂𐌹𐌲𐍉𐌽

a Roman ball game involving three people standing in a triangle

 a small ball stuffed with hair, used in this game

trigone

Source: wiktionary.org