triangle
tri.an.gle \'tri--.an-g*l\ n [ME, fr. L triangulum, fr. neut. of triangulus
triangular, fr. t]ri- + angulus angle 1: a polygon having three sides 2a:
a musical percussion instrument made of a rod of steel bent into the fo rm
of a triangle open at one angle 2b: a drafting instrument consisting of a
thin flat right-angled triangle o f wood or plastic with acute angles of 45
degrees or of 30 degrees and 60 degrees 3: a situation involving the love
of two persons of one sex for one of the opposite sex with the resulting
complications {the eternal ~}