/ Dictionary / Index F feather-duster worm: Meaning and Definition of Find definitions for: feath'er-dust•er worm' Pronunciation: (fe'ur dus"tur), [key] any tube-dwelling polychaete worm of the families Sabellidae and Serpulidae, the numerous species having a crown of feathery tentacles used in feeding and respiration. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. feather duster feathered Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language