/ Dictionary / Index F filter tip: Meaning and Definition of Find definitions for: fil'ter tip" Pronunciation: [key] a mouthpiece for a cigarette or cigar having a means of filtering the smoke. a cigarette or cigar having such a mouthpiece. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. filter paper filth Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language