DECOLLETE
decollete, low-cut, low-necked
(adjective) (of a garment) having a low-cut neckline; “a low-cut neckline”
Source: WordNet® 3.1
Etymology
Adjective
decollete (comparative more decollete, superlative most decollete)
Having a low-cut neckline.
Source: Wiktionary
Dé`col`le*té", a. Etym: [F., p. p. of décolleter to bare the neck and
shoulders; dé- + collet collar, fr. L. collum neck.]
Definition: Leaving the neck and shoulders uncovered; cut low in the neck,
or low-necked, as a dress.
Source: Webster’s Unabridged Dictionary 1913 Edition