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]
(..) from the Red God. - Speak three names. - I can name anyone? - A man has said. The Stony Shore's not far from Torrhen's Square. More impressive prize than a few fisherman's daughters. Soon as Winterfell got word that we'd taken Torrhen's Square, the Starks would send their men to take it back. Take me to my ship. Lord Stark, Torrhen's Square is under siege. Torrhen's Square is barely leagues from here. Go, Ser Rodrik. Take the men you need. (..)2012 TvShow: Game of Thrones Title: The Old Gods and the New Season: 2 Episode 6