/ Dictionary / Index F fiberfill: Meaning and Definition of Find definitions for: fi•ber•fill Pronunciation: (fī'bur-fil"), [key] — n. synthetic fibers, as polyester, used as a filling or insulating material for pillows, cushions, comforters, winter garments, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fibered Fiberglas 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