/ Dictionary / Index F flannelmouth sucker: Meaning and Definition of Find definitions for: flan'nelmouth suck'er Pronunciation: [key] — Ichthyol. Ichthyol. a sucker, Catostomus latipinnis, of the Colorado River and its tributaries. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flannelmouthed flanning Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language