பொருள் : A street with only one way in or out.
ஒத்த சொற்கள் : cul de sac, dead-end street, impasse
பொருள் : (figurative) a course of action that is unproductive and offers no hope of improvement.
எடுத்துக்காட்டு :
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.