Cul-de-sac

A cul-de-sac (literally "butt of the sack" in French) is an expression of French origin also used in Catalan and Occitan referring to a dead end (British English, Canadian, American and Australian English), close, no through road (British English, Canadian and Australian English) or court (American) meaning dead-end street with only one inlet/outlet. While historically built for other reasons, one of its modern uses is to calm vehicle traffic.