/ Dictionary / Index S sweetheart neckline: Meaning and Definition of Find definitions for: sweet'heart neck"line Pronunciation: [key] 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. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sweetheart contract sweetie Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language