cul-de-sac
Pronunciation:
/ˈkʌldəsak//ˈkʌldəsæk/noun
Definitions
A blind alley or dead end street.
A circular area at the end of a dead end street to allow cars to turn around, designed so children can play on the street, with little or no through-traffic.
An impasse.
A sack-like cavity, a tube open at one end only.