guardian noun

1 person/institution that guards/protects sth

ADJ. self-appointed She has become the self-appointed guardian of the nation's conscience. | moral

VERB + GUARDIAN act as The village people act as guardians of the land.

2 person who is responsible for a child

ADJ. legal

VERB + GUARDIAN appoint, appoint sb (as) The court appoints a legal guardian for the child. | act as