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English version

blind alley

From Longman Dictionary of Contemporary English
Related topics: Roads
blind alleyˌblind ˈalley noun [countable]  1 TTRa small narrow street with no way out at one end2 NOT DO somethinga way of doing something that seems as if it will have a successful result, but which in fact does not False information has led the police up a series of blind alleys.
Examples from the Corpus
blind alleyThe echinoderms may seem, from a human point of view, to be a blind alley of no particular importance.Al said the talks had temporarily gone down a blind alley, but he was sure the two companies could agree.If the police went charging up a blind alley as a result of her information, it wouldn't be her fault.It took the reader down every blind alley.
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