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