AinuyoudaoicibaDictYouDict[Ainu 词源字典]
people native to northern Japan and far eastern Russia, 1819, from the Ainu self-designation, literally "man, human." Once considered to be Caucasian, based on their appearance; DNA testing has disproved this. Their language is an isolate with no known relatives.[Ainu etymology, Ainu origin, 英语词源]