triangle
/ˈtɹaɪəŋɡəl/
Proposed by a contributor, not yet supported by evidence.
Sense 1
Meaning · English
A polygon with three sides and three angles.
Noun
Examples
The wedge-shaped character was the triangle, the archaic Paleolithic sign of the vulva; the pubic triangle was at the end of the phallic stylus.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Meaning · English
A set square.
NounRegister: US
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “triangle” mean?
A polygon with three sides and three angles.
Is “triangle” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.