1) A shape with four sides, the sides are all the same left and all interior angles are 90 degrees
2) Someone who if their parents knew every intricate of their lives the parents wouldn't be to upset or concerned
"Wow you have cut your piece of paper into a square"

a) "Sally is such a square"
b) "Yeah but I bet her parents are proud"
a) "Wish she would have some fun sometimes though"
by Fresher 4-6 September 27, 2018
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The shape of a girls butt

When the girl appears to have no hips it is all on the back with some serious right angles
by Blue GOD May 20, 2019
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He's too "square" to come party , and hang out with all of us weirdo, freaks.
by Knuckleduzter November 21, 2015
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