haggaday (n.)youdaoicibaDictYouDict[haggaday 词源字典]
mid-14c., "a kind of door latch," and said to be still the name for rings for raising thumb-latches in the north of England. It appears to be what it looks like: what you say when you open the door ("have good day," as in the 1414 record of them as hafgooddays).[haggaday etymology, haggaday origin, 英语词源]