/ Dictionary / Index F fathead minnow: Meaning and Definition of Find definitions for: fat'head min'now Pronunciation: [key] a North American cyprinid fish, Pimephales promelas, having an enlarged, soft head. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fatheaded father Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language