cul-de-sac Pronunciation: /ˈkʌldəsæk/Translate cul-de-sac | into German | into Italian | into Spanish French translation of cul-de-sacn impasse (f), cul-de-sac (m)cul-de-sac in other Oxford dictionaries Definition of cul-de-sac in the British & World English dictionary Definition of cul-de-sac in the US English dictionary