/ Dictionary / Index F filoplume: Meaning and Definition of Find definitions for: fil•o•plume Pronunciation: (fil'u-plm", fī'lu-), [key] — n. Ornith. a specialized, hairlike feather having a slender shaft with few or no barbs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Filofax filopodium Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language