pie in the sky pie in the sky {n. phr.}, {informal} An unrealistic wish or hope. Our trip to Hawaii is still only a pie in the sky. Compare: PIPE DREAM. Categories: add yours {informal} {n. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: P Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry