Crossword clues for the word: PIEIN The word PIEIN has appeared as an answer to at least 4 crossword clues on different crossword puzzles. Crossword clues for PIEIN Showing 1 to 4 of 4 results Clue(s) __ the sky (illusory prospect) ___ the sky (pipe dream) ___ the sky (promise of future happiness): 2 wds. ___ the sky (wishfulness)