A shape with the properties of both a square and a circle. Sometimes referred to by atheists who claim that God is like such a shape.
Psst... squarecircles don't exist in reality!
by squarecircle August 09, 2006
A logical contradiction.
Based on the interpretation of the Libertarians Against Capitalism, this phrase would have to be considered a logical contradiction, like "square circle."
by AustroLibertarian-UD May 17, 2010