n. | 1. | (Geom.) A figure bounded by three lines, and containing three angles. | |||
2. | (Mus.) 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. | ||||
3. | A draughtsman's square in the form of a right-angled triangle. | ||||
4. | (Mus.) 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. | ||||
5. | (Astron.) A small constellation situated between Aries and Andromeda.
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Noun | 1. | triangle - a three-sided polygon Synonyms: trigon, trilateral |
2. | triangle - something approximating the shape of a triangle; "the coastline of Chile and Argentina and Brazil forms two legs of a triangle" | |
3. | triangle - any of various triangular drafting instruments used to draw straight lines at specified angles | |
4. | triangle - a percussion instrument consisting of a metal bar bent in the shape of an open triangle |