flounce
A strip of decorative material, usually pleated, attached along one edge; a ruffle.
Then he looked from her to some gayer figures moving along the road with flutters of bright streamers and flounces
The act of flouncing; a dramatic departure.
Emma Watson’s approach is in stark contrast to that of Daniel Day-Lewis; a man who, despite being the greatest actor on earth, is somewhat prone to a flounce. […] Day-Lewis announced that he had retired from acting, putting out a statement that read: “Daniel Day-Lewis will no longer be working as an actor.”
A row of corrugations, skin folds, or spines, on the hemipenis of a snake.
Where it comes from
Probably of North Germanic origin, from Norwegian flunsa (“hurry”), perhaps ultimately imitative. Or, perhaps formed on the pattern of pounce, bounce.
Adapted from the Wiktionary entry flounce (CC BY-SA 4.0).