v.1. To make something square or rectangular: The carpenter squared the plank off with a table saw. The designer has squared off the toe of the shoe.
2. To assume a fighting stance; prepare to fight: The two fighters squared off and exchanged blows.
3. To face someone or something in a competition or debate: The two candidates will square off in a debate. The team squared off against its longtime rival. The governor prepared to square off with legislators over the new tax bill.