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custos

noun
cus·​tos | \ˈkəˌstäs, -tōs;ˈku̇ˌstōs, ˈküˌ-\
plural custodes\(ˌ)kəˈstō(ˌ)dēz; ku̇ˈstōˌdās, kü-​ \

Definition of custos 

1 : keeper, custodian, guard

2 : direct sense 1

3 [ Medieval Latin, from Latin ] : a superior of a Franciscan province or custody

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History and Etymology for custos

Middle English, guardian, from Latin

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