bock (n.)youdaoicibaDictYouDict[bock 词源字典]
strong, dark type of German beer, 1856, from German ambock, from Bavarian dialectal pronunciation of Einbecker bier, from Einbeck, Hanover, where it was first brewed; popularly associated with Bock "a goat." Brewed in December and January, drunk in May.[bock etymology, bock origin, 英语词源]