black triangle (English, noun)
expansion: black triangle (plural black triangles)
Senses:
glosses: Used other than figuratively or idiomatically: see black, triangle.
topics: human-sciences
mysticism
mythology
philosophy
sciences
ufology
glosses: One of a class of triangle-shaped unidentified flying objects, usually with a light in each corner.
Forms:
form: black triangles
tags: plural