/ Dictionary / Index F foghorn: Meaning and Definition of Find definitions for: fog•horn Pronunciation: (fog'hôrn", fôg'-), [key] — n. a deep, loud horn for sounding warning signals in foggy weather, as to ships. a deep, loud voice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: foghorn (Thesaurus) Foggy Bottom fog light Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language