/ Dictionary / Index L lip gloss: Meaning and Definition of Find definitions for: lip' gloss" Pronunciation: [key] a cosmetic used to give shine, and often a tint, to the lips. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Lipetsk lipid Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language