blind alley Meaning, Definition & Usage

  1. noun a street with only one way in or out
    impasse; dead-end street; cul de sac.
  2. noun (figurative) a course of action that is unproductive and offers no hope of improvement
    • all the clues led the police into blind alleys
    • so far every road that we've been down has turned out to be a blind alley

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