Lewis & Short

custōdītĭo, ōnis, f. [custodio].

  1. I. In gen., guardianship, care: custoditio est opera ad custodiendum quid sumpta, Paul. ex Fest. p. 61, 15.
  2. II. Transf., a keeping, observance: legum, Vulg. Sap. 6, 19.