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Mathematical instrument that is intended for measuring angles. Can also be fired a great distance along a desk, a great event in the maths class olympics.
Thomasina: Give me my protractor. Fire!
by Spatula March 08, 2004
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A protractor is a devil tool used in a wood shop or a math class. It is more than that tho every protractor ever made is soaked in demonic acid and they will haunt you. Green protractors are like the devil. It’s like how demons aren’t as scary as the devil but still scary; regular protractors aren’t as scary as green ones but still scary.
I played with a ouija board and my house was haunted by a protractor. Good thing it wasn’t a green on I would be dead.
by Reese in pieces December 18, 2017
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