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]
(..) Over time, however, costs have doubled Did you write this? I write for you sometimes Not because you have to firepower to defend itself against enemy tanks The suspension system had to be redesigned because of the vehicle's extra weight (..)1987 Broadcast News