The team is looking to 'defend' its national title. [=to win the national title again]
As a U.S. senator, it is my responsibility to 'defend' [='uphold'] the Constitution.
She successfully 'defended' her championship. [=she won the championship again]
(..) Messala? Messala, please help us. So you don't harbor Zealots. NAOMI: Messala? Messala? No one here has done anything. I beg you, please, defend this house. You make the order. It was me. It was me, I did it. I confess! NAOMI: Judah, what are you doing? JUDAH: Please, take me. (..)2016 Ben-Hur