Out of square

What is Out of square?

Out of square definition and meaning on Dictionary terms:
a rectangle having all four sides of equal length.
anything having this form or a form approximating it, as a city block, rectangular piece of candy, etc.

an open area or plaza in a city or town, formed by the meeting or intersecting of two or more streets and often planted with grass, trees, etc., in the center.
a rectangularly shaped area on a game board, as in chess or checkers.
a try square, T square, or the like.
Mathematics. the second power of a quantity, expressed as a2 = a