Definition of custodial adjective from the Oxford Advanced American Dictionary

     

    custodial

     adjective
    adjective
    NAmE//kʌˈstoʊdiəl//
     
    [usually before noun]
     
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  1. 1 (law) connected with the right or duty of taking care of someone; having custody The mother is usually the custodial parent after a divorce. opposite noncustodial
  2. 2 relating to work done by a custodian The custodial staff cleans the building at night.
See the Oxford Advanced Learner's Dictionary entry: custodial