hootenanny (n.)youdaoicibaDictYouDict[hootenanny 词源字典]
"informal session of folk musicians," 1940, American English, earlier "a gadget" (1927), of unknown origin, perhaps a nonsense word.
Another device used by the professional car thief, and one recently developed to perfection, according to a large Chicago lock-testing laboratory, is a "hootenanny," so-called by the criminals using it. ["Popular Mechanics," February 1931]
[hootenanny etymology, hootenanny origin, 英语词源]