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]
(..) - It's fine. Yes. I'll manage. Alright. I think I'm freaking out a little. Don't worry, it doesn't show. ... a... c - b square - b square? I found , not b squ... Hey. Go take a walk, blondie. - So Bastien... You remember me? (..)2011 The Intouchables