叭達響的東西;飄動之物
Flapper \Flap"per\, n. 1. One who, or that which, flaps. 2. See {Flipper}. ``The flapper of a porpoise.'' --Buckley. {Flapper skate} (Zo["o]l.), a European skate ({Raia intermedia}).
flapper n : a young woman in the 1920s who flaunted her unconventional conduct and dress