1. the low-cut neckline of a woman’s dress or top
2. the upper part of a woman’s chest and neck as revealed by a low neckline

Examples

• The evening gown featured an elegant decolletage.
• She chose a dress with a modest decolletage for the formal dinner.
• The designer emphasized the decolletage with delicate beading.
• Her grandmother’s pearl necklace complemented the dress’s decolletage perfectly.
• The fashion magazine featured various styles of decolletage for different occasions.
• She felt confident in the dress despite its daring decolletage.