/ Dictionary / Index F filling: Meaning and Definition of Find definitions for: fill•ing Pronunciation: (fil'ing), [key] — n. an act or instance of filling. something that is put in to fill something else: They used sand as filling for the depression. a substance such as cement, amalgam, gold, or the like, used to fill a cavity caused by decay in a tooth. a food mixture that goes into something, as if to fill it: sandwich filling; pie filling. Also calledyarn carried by the shuttle and interlacing at right angles with the warp in woven cloth. See diag. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: filling (Thesaurus) fill-in filling knitting Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language