custodian

US /kʌsˈtoʊ.di.ən/
UK /kʌsˈtoʊ.di.ən/
"custodian" picture
1.

a person who has responsibility for taking care of or protecting something

:
•
The museum hired a new custodian for its valuable art collection.
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The bank acts as a custodian of its clients' assets.
:
guardiankeepercaretakerstewardtrustee
2.

a person employed to look after a public building, such as a school or museum

:
•
The school custodian ensures the building is clean and well-maintained.
•
The night custodian locks all the doors before leaving.
:
janitorsuperintendentcaretakerporter