hobgoblin (n.)youdaoicibaDictYouDict[hobgoblin 词源字典]
1520s, from hob "elf," from Hobbe, a variant of Rob (compare Hick for Richard, Hodge for Rodger, etc.), short for Robin Goodfellow, elf character in German folklore, + goblin.[hobgoblin etymology, hobgoblin origin, 英语词源]