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Any eight sided object, most commonly found in nature as being red with white letters. Found along roadways as a way to control movement. Can also be found in other areas such as mountains, valleys, etc.

Have an uncanny ability to move quickly and jump in front of you.

Octangles are known to 'attack' when unexpected and it is unknown how to defend against them.

Also related to tritangle, quadtangle, hextangle, dodecatangle.
I wish someone would have hit me in the head with an octangle before getting on this train.
by Sandman02 May 06, 2011
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