rathskeller (n.)youdaoicibaDictYouDict[rathskeller 词源字典]
1900, from German ratskeller, earlier rathskeller, "a cellar in a German town hall in which beer is sold," from rat "council" (see rede (n.)) + keller "cellar" (see cellar (n.)). The German -h- inserted to avoid association with the word for "rat."[rathskeller etymology, rathskeller origin, 英语词源]