Custos | Webster's Dictionary of the English Language

custos
custos, ōdis, comm. [root sku-, to cover, hide, etc.; cf. scutum, κεύθω, Germ. Haut, Haus, Corss. Au...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
custos
custōs ōdis, m and f SCV-, a guard, watch, preserver, keeper, overseer, protector, defender, atten...

An Elementary Latin Dictionary