/ Dictionary / Index H headliner: Meaning and Definition of Find definitions for: head•lin•er Pronunciation: (hed'lī"nur), [key] — n. a performer whose name appears most prominently in a program or advertisement or on a marquee; star. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: headliner (Thesaurus) headline headlock Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language