Crossword clues for the word: ROBERTSTACK The word ROBERTSTACK has appeared as an answer to at least 11 crossword clues on different crossword puzzles. Crossword clues for ROBERTSTACK Showing 1 to 11 of 11 results Clue(s) ___ came as a pancake flipper """The Untouchables"" star's small nail?" "The Untouchables" actor who said "That's impossible, they're on instruments!" in "Airplane!": 2 wds. "The Untouchables" star Actor's course of action Actor's fastener? Actor's strategy? Frost's small nail or TV mystery host? Pin of photographer Mapplethorpe? Star of TV's 'The Untouchables' Taylor pile at Las Vegas?