noun Date: 1941 a neckline for women's clothing that is high in back and low in front where it is scalloped to resemble the top of a heart
SWEETHEART NECKLINE
Meaning of SWEETHEART NECKLINE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012