- of or relating to custody.
- of, relating to, or appropriate to a custodian: a building superintendent’s custodial duties.
- responsible for or providing protective supervision and guardianship rather than seeking to improve or cure: Overcrowding forces many mental hospitals to provide only custodial care.
- a container or receptacle for something sacred, as the Host.
adj.1772, from custody (Latin custodia) + -al (1).