EtonyoudaoicibaDictYouDict[Eton 词源字典]
collar (1882), jacket (1873, formerly worn by the younger boys there), etc., from Eton College, public school for boys on the Thames opposite Windsor, founded by Henry VI. The place name is Old English ea "river" (see ea) + tun "farm, settlement" (see town (n.)). Related: Etonian.[Eton etymology, Eton origin, 英语词源]