ErseyoudaoicibaDictYouDict[Erse 词源字典]
"of or pertaining to the Celts of Ireland and Scotland," late 14c., early Scottish variant of Old English Irisc or Old Norse Irskr "Irish" (see Irish); applied by Lowland Scots to the Gaelic speech of the Highlanders (which originally is from Ireland); sense shifted 19c. from "Highlanders" to "Irish."[Erse etymology, Erse origin, 英语词源]