/ Dictionary / Index B blue devils: Meaning and Definition of Find definitions for: blue' dev'ils Pronunciation: [key] low spirits; depression. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blue devil blue dicks Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language