/ Dictionary / Index T Top 40: Meaning and Definition of Find definitions for: Top 40 Pronunciation: [key] (sometimes l.c.) the 40 most popular or best-selling recordings, songs, etc., within a stated time period. pertaining to, designating, or being the Top 40. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. top flight topfull Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language