/ Dictionary / Index B black fog: Meaning and Definition of Find definitions for: black' fog' Pronunciation: [key] (in Cape Cod, Mass.) a dense fog. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. black fly Blackfoot Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language