major-domo (n.)youdaoicibaDictYouDict[major-domo 词源字典]
1580s, via Italian maggiordomo or Spanish mayordomo, from Medieval Latin major domus "chief of the household," also "mayor of the palace" under the Merovingians, from Latin major "greater" (see major (adj.)) + genitive of domus "house" (see domestic).[major-domo etymology, major-domo origin, 英语词源]