JeanyoudaoicibaDictYouDict[Jean 词源字典]
masc. proper name, from French equivalent of John. Fem. proper name is from French equivalent of Jane.[Jean etymology, Jean origin, 英语词源]
jean (n.)youdaoicibaDictYouDict
"twilled cotton cloth," mid-15c., from Middle French jean fustian "fustian (a type of twilled cotton cloth) of Genoa," the city in Italy, from Old French Jannes "Genoa," from Latin Genua (see Genoa). The plural form jeans became standard 19c.