blind alley
US /blaɪnd ˈæl.i/
UK /blaɪnd ˈæl.i/

1.
callejón sin salida, cul-de-sac
a street or passage that is closed at one end; a cul-de-sac
:
•
We drove down a blind alley and had to turn around.
Condujimos por un callejón sin salida y tuvimos que dar la vuelta.
•
The children were playing at the end of the blind alley.
Los niños estaban jugando al final del callejón sin salida.
2.
callejón sin salida, impasse
a course of action that leads to no progress or a dead end
:
•
Their investigation led them down a blind alley.
Su investigación los llevó a un callejón sin salida.
•
Pursuing that strategy would be a blind alley for the company.
Perseguir esa estrategia sería un callejón sin salida para la empresa.