Make sure the post is 'square' to the floor. [=make sure that there is a right angle where the post and the floor meet]
I'll go on the trip if I can 'square it with' my parents. [=if my parents will agree to let me go]
Here's the rest of the money. Now we're 'square'. [=now we don't owe each other anything]
(..) You can't go into the unit. Police orders. Do you have somebody you can call? The police later told me the pilot light might have gone out square feet with high ceilings for days and days. Then the refrigerator's compressor could have clicked on. If you ask me now, (..)1999 Fight Club