The two rivals were squaring off in the boxing ring.
squaring up
Frequency:
70
%
He was squaring up his debts before the end of the month.
squaring the deal
Frequency:
45
%
The negotiators were close to squaring the deal.
Idiomatic Expressions for squaring
Phrase: square the circle
Meaning: to try to do something that is impossible or very difficult
Usage: She was trying to square the circle by balancing a full-time job with raising three young children.