custos
[noun]
Synonyms: custodian, cerberus, claviger, custodier, guardian, keeper, warden, watchdog

[TahlilGaran] English Synonym Dictionary ▲

custos noun. ['kʌstɒs] Pl. custodes [kʌ'stǝʊdi:z], (orig.) -oses. LME.
[Latin.]
A keeper, a guardian, a custodian. Now chiefly in titles from mod. Latin.
custos rotulorum [rǝʊtjʊ'lɔ:rǝm] [Latin = keeper of the rolls] the principal Justice of the Peace of a county, who has nominal custody of the records of the commission of the peace.

[TahlilGaran] English Dictionary ▲