/ Dictionary / Index L lie-in: Meaning and Definition of Find definitions for: lie-in Pronunciation: (lī'in"), [key] — n. a protest demonstration in which participants lie down in a public place against regulations and resist being moved. lie-in Pronunciation: (lī'in"), [key] — n. Chiefly Brit. an act or instance of staying in bed longer than usual, esp. in the morning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lie-in (Thesaurus) Lie group lien Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language