square up in WordNet English dictionary

1. settle conclusively; come to terms
   "We finally settled the argument"
   settle  square off  square up  determine 
   
2. even up the edges of a stack of paper, in printing
   square up  jog  even up 
   
3. make square
   "Square the circle"; "square the wood with a file"
   square  square up 
   

square up in English Wiktionary