custos morum

[ koo s-tohs moh-roo m; English kuhs-tos mawr-uh m, mohr- ]
/ ˈkʊs toʊs ˈmoʊ rʊm; English ˈkʌs tɒs ˈmɔr əm, ˈmoʊr- /

noun, plural cus·to·des mo·rum [koo s-toh-des moh-roo m; English kuh-stoh-deez mawr-uh m, mohr-] /kʊsˈtoʊ dɛs ˈmoʊ rʊm; English kʌˈstoʊ diz ˈmɔr əm, ˈmoʊr-/. Latin.

a custodian or guardian of morals; censor.

Origin of custos morum

literally, guardian of established usages, laws, etc.