/ Dictionary / Index T topline: Meaning and Definition of Find definitions for: top•line Pronunciation: (top'līn'), [key] — adj. so important as to be named at or near the top of a newspaper item, advertisement, or the like: a topline actress; topline news. of the highest reputation, importance, etc.: a topline business firm. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. top-level top loader Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language