Trī'gon, n.

n. [Fr. trigone, Lat. trigonum, Gr. τρίγωνον, from τρι, τρίς, three, thrice, and γωνία, a corner, angle.]

1. A figure of three sides; a triangle.
2. (Astrol.) (a.) A division consisting of three signs. (b.) Trine, an aspect of two planets distant 120 degrees from each other. Hutton.
3. (Antiq.) (a.) A kind of triangular lyre or harp used among the ancients. (b.) A kind of game at ball played by three persons standing so as to be at the angular points of a triangle.