Custodian
Definition 1 of 3
Pro Tip 1/3
Care Responsibility
Indicates ongoing responsibility for care, often used for buildings or institutions. As a museum custodian, she protects the art.
Pro Tip 2/3
Not Ownership
Being a custodian doesn't mean you own what you're looking after. He is the custodian of the lost phone.
Pro Tip 3/3
Protector Role
The word implies a protective, caring role beyond just cleaning and maintenance. School custodians ensure a safe environment for students.