- a neckline on a woman's garment, as a dress, with a high back and a low-cut front with two curved edges resembling the conventionalized shape of a heart.
Origin of sweetheart neckline
First recorded in 1940–45
Also called sweetheart neck.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a neckline on a woman's dress that is low at the front and shaped like the top of a heart