1. 捍卫者;保护者;维护者
If someone is a defender of a particular thing or person that has been criticized, they argue or act in support of that thing or person.

2. (足球、曲棍球等运动中的)防守队员，防守球员
A defender in a game such as football or hockey is a player whose main task is to try and stop the other side scoring.

1. a person who cares for persons or property

Synonym: guardianprotectorshielder

2. a fighter who holds out against attack

Synonym: withstander