- 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.
Meaning of 'triangle' (Princeton's WordNet)
1 . triangle
[ n]
Meaning (1): - something approximating the shape of a triangle
Example in sentence:
the coastline of Chile and Argentina and Brazil forms two legs of a triangle
Astronomical triangle Astronomical triangle is the spherical triangle formed by joining the observer’s elevated pole, his zenith and the position of the body on the celestial sphere.