someone whose job or duty is to protect or watch over a person, place, or thing
The night watchman acted as a guardian of the museum after closing time.
A loyal dog can be a faithful guardian of a family home.
✦ Late Middle English from Anglo-French gardien, from Old French guarder “to guard” +-ian suffix.
a person who has the legal authority and responsibility to care for a child when the child’s parents cannot
After the accident, her aunt became her legal guardian.
A guardian must sign the school permission slip for the trip.
