/ Dictionary / Index B blue-sky: Meaning and Definition of Find definitions for: blue-sky Pronunciation: (bl'skī'), [key] — adj. fanciful; impractical: blue-sky ideas. (esp. of securities) having dubious value; not financially sound: a blue-sky stock. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: blue-sky (Thesaurus) blueshift blue-sky law Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language