n. - A figure having three angles; a triangle.
n. - A division consisting of three signs.
n. - Trine, an aspect of two planets distant 120 degrees from each other.
n. - A kind of triangular lyre or harp.
n. - A kind of game at ball played by three persons standing at the angular points of a triangle.
n. - The cutting region of the crown of an upper molar, usually the anterior part. That of a lower molar is the Tri"go*nid (/).