1. a skirt worn underneath another skirt or dress, typically for warmth, modesty, or to give shape

Examples

• She wore a white cotton underskirt beneath her summer dress.
• The vintage gown required a full underskirt to achieve the proper silhouette.
• Her underskirt was visible when she sat down.
• The bride’s underskirt had multiple layers of tulle.
• She adjusted her underskirt before putting on the outer garment.
• The underskirt helped prevent the dress from clinging to her legs.