MichaelmasyoudaoicibaDictYouDict[Michaelmas 词源字典]
early 12c., Sanct Micheles mæsse, the feast of St. Michael (Sept. 29, an English quarter-day), from Michael + mass (n.2). Goose is the day's traditional fare since at least 15c.[Michaelmas etymology, Michaelmas origin, 英语词源]