custodian

noun5

1. •
   A person entrusted with the custody or care of something or someone; a caretaker or keeper.

   • After their parents' death, their aunt became the children's custodian.
   • The building's custodian could fix nearly anything. The place always looked great!
2. •
   A gaolkeeper.
3. •
   A protector or guard.
4. •
   (US, Canada) A janitor; a cleaner.
5. •
   An administrator.