Flounce on a garment is a term used to describe a decorative trim or ruffle that is added to the hem of a skirt, dress, or blouse. The term peplum, which is a 6 letter word, is also used to describe this type of trim. Peplum is a short overskirt or ruffle attached to the waistline of a garment, usually a dress or blouse. It is often made of a different fabric than the garment and is used to create a more flattering silhouette.