casbah Syllabification: (cas·bah)Pronunciation: /ˈkazˌbä/ (also kasbah)Definition of casbah noun the citadel of a North African city. (the casbah) the area surrounding a North African citadel, typically in the old part of a city. Origin: mid 18th century: French, from Arabic ḳaṣaba 'citadel'casbah in other Oxford dictionaries Definition of casbah in the British & World English dictionary