1) French word used in English 1) Low neck 2) Neck 3) Neckline 1) Part of clothing 
Décolletage ʒ (or décolleté, its adjectival form, in current French) is the upper part of a woman`s torso, comprising her neck, shoulders, back and chest, that is exposed by the neckline of her clothing. However, the term is most commonly applied to a neckline that reveals or emphasizes cleavage. Low-cut necklines are a feature of ball gowns,....
the neckline of a dress cut low in the front or back and often across the shoulders. · a décolleté garment or costume.