Wallach (n.)youdaoicibaDictYouDict[Wallach 词源字典]
also Walach, one of a Rumanian people, 1786, from German Wallache, from Old Church Slavonic Vlachu, from Old High German wahl "foreigner, one speaking a foreign language" (see Vlach). Related: Wallachia; Wallachian. [Wallach etymology, Wallach origin, 英语词源]