Flapper
WordNet
noun
(1) A young woman in the 1920s who flaunted her unconventional conduct and dress
WiktionaryText
Etymology
Most likely from Victorian sporting slang, meaning young wildfowl in August which are full-sized, tender and worthwhile quarry, but are naive and unable to fly properly due to the late development of flight feathers in ducks and geese.
Noun
- Someone or something that flaps.
- A young woman of the 1920s who flouted convention in her dress and behaviour/behavior.