black triangleRate this phrase:(0.00 / 0 votes)Say it
Used other than as an idiom: see black, triangle.

Additional definitions for 'black triangle':

black triangleOne of a class of triangle-shaped unidentified flying objects, usually with a light in each corner.
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"black triangle." STANDS4 LLC, 2018. Web. 19 Mar. 2018. <>.

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