blind alley, cul de sac, dead-end street, impasse (noun)

a street with only one way in or out

blind alley (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"

blind alley (Noun)

A street that leads nowhere.

Blind Alley

"Blind Alley" is a science fiction short story by Isaac Asimov. It was first published in the March 1945 issue of Astounding Science Fiction, and later included in the collection The Early Asimov. Although the story postulates a race of intelligent non-humans, it is set in the Foundation universe, during the era of Trantor's Galactic Empire.

Blind Alley

"Blind Alley" is a science fiction short story by American writer Isaac Asimov. It was first published in the March 1945 issue of Astounding Science Fiction, and later included in the collection The Early Asimov (1972). Although the story postulates a race of intelligent non-humans, it is set in the Foundation universe, during the era of Trantor's Galactic Empire.