I. flounce 1 /flaʊns/ BrE AmE verb [intransitive always + adverb/preposition]
[ Date: 1500-1600 ; Origin: Probably from a Scandinavian language ]
to walk in a quick determined way without looking at people because you are angry:
She flounced out of the room.
II. flounce 2 BrE AmE noun
[ Date: 1700-1800 ; Origin: frounce 'fold, plait' (14-19 centuries) (influenced by ⇨ ↑ flounce 1 ), from Old French fronce ]
1 . [countable] a wide band of cloth with folds, which is stitched onto the edge of a skirt, dress, shirt, or curtain as a decoration:
The dress had red satin flounces at the bottom.
2 . [singular] a way of walking in a quick determined way without looking at people, because you are angry:
She walked off with a flounce.