dead end Syllabification: (dead end)Translate dead end | into French | into German | into Italian | into Spanish Definition of dead end noun an end of a road or passage from which no exit is possible; a cul-de-sac:the path came to a dead end a road or passage having a dead end. a situation offering no prospects of progress or development: [as modifier]:a dead-end job verb [no object] (dead-end) North American (of a road or passage) come to a dead end:he kept walking, until the corridor dead-endeddead end in other Oxford dictionaries Definition of dead end in the British & World English dictionary