[ˈtrʌɪaŋɡl], (Noun)

Definitions:
- a plane figure with three straight sides and three angles
(e.g: an equilateral triangle)

- an emotional relationship involving a couple and a third person with whom one of them is also involved

- a small brownish Eurasian moth of oak and beech woods


Phrases:

Origin:
late Middle English: from Old French triangle or Latin triangulum, neuter of triangulus ‘three-cornered’(see tri-, angle)