jacket Pronunciation: /ˈdʒækɪt/Translate jacket | into French | into Italian | into Spanish German translation of jacketn. 1 Jacke; (of suit) Jackett sports jacket = Sakko 2 (of book) Schutzumschlag 3jacket potatoes = in der Schale gebackene Kartoffelnjacket in other Oxford dictionaries Definition of jacket in the British & World English dictionary Definition of jacket in the US English dictionary