roadblock Syllabification: (road·block)Pronunciation: /ˈrōdˌbläk/Translate roadblock | into French | into German | into Italian | into Spanish Definition of roadblock noun a barrier or barricade on a road, especially one set up by the authorities to stop and examine traffic. US any hindrance:the biggest roadblock to solar power is its price tag roadblock in other Oxford dictionaries Definition of roadblock in the British & World English dictionary