carriageway Syllabification: (car·riage·way)Pronunciation: /ˈkarijˌwā/Translate carriageway | into French | into German | into Italian Definition of carriageway noun British each of the two sides of a divided highway or expressway, each of which usually have two or more lanes. the part of a road intended for vehicles rather than pedestrians. carriageway in other Oxford dictionaries Definition of carriageway in the British & World English dictionary