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English definition of “custodian”

custodian

noun [C]     /kʌsˈtəʊ.di.ən/ US  /-ˈtoʊ-/
formal a person with responsibility for protecting or taking care of something or keeping something in good condition : the custodian of a museum / castle Protection and protectorsEnvironmental issues formal someone who tries to protect particular ideas or principles : She sees herself as a custodian of the public's morals .Supporters, members and defendersBelievers and non-believers US for caretakerProtection and protectorsEnvironmental issues
(Definition of custodian noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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