Word.ws English Dictionary

black triangle

black triangle noun: one of a class of triangle-shaped unidentified flying objects, usually with a light in each corner.

black triangle: one of a class of triangle-shaped unidentified flying objects, usually with a light in each corner
Image: J.S. Henrardi, Public domain, via Wikimedia Commons

Noun

black triangle (plural black triangles)

  1. One of a class of triangle-shaped unidentified flying objects, usually with a light in each corner.
    • Somewhere behind that blinking yellow light that black triangle was hovering, (or moving only a few miles per hour), in our direction, straight at us.2005, Bill Foster, Peggy Foster, Nadine Wheeler, The Black Triangle Abduction, The Invisible College Press, page 22
    • Note: The black triangle is a commonly seen UFO.2007, Craig R. Lang, The Cosmic Bridge, Close Encounters and Human Destiny, lulu.com, page 4
  2. Used other than figuratively or idiomatically: see black, triangle.

Forms of black triangle

pluralblack triangles

Questions about black triangle

What does black triangle mean?
Black triangle means one of a class of triangle-shaped unidentified flying objects, usually with a light in each corner.
What part of speech is black triangle?
Black triangle is a noun.
What is the plural of black triangle?
The plural of black triangle is black triangles.

Words near black triangle in the dictionary

  1. black tops
  2. Black Tortoise
  3. Black Tortoise of the North
  4. Black Tot Day
  5. Black Town
  6. black triangle
  7. black triangles
  8. black truffle
  9. black truffles
  10. black trumpet
  11. black trumpets

Source and license

Adapted from Wiktionary: black triangle (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “black triangle.” Word.ws, https://word.ws/black_triangle. Based on Wiktionary, CC BY-SA 4.0.