Triangle

A figure bounded by three lines, and containing three angles.

An instrument of percussion, usually made of a rod of steel, bent into the form of a triangle, open at one angle, and sounded by being struck with a small metallic rod.

A draughtsman's square in the form of a right-angled triangle.

A kind of frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment, -- now disused.

A small constellation situated between Aries and Andromeda.

A small constellation near the South Pole, containing three bright stars.

any of various triangular drafting instruments used to draw straight lines at specified angles