co-star Pronunciation: /ˈkəʊstɑː(r)/ [Cinemat., Theatre]Translate co-star | into French | into Italian | into Spanish German translation of co-starA. n. be a/the co-star = eine der Hauptrollen/die zweite Hauptrolle spielenB. v.i. (-rr-) eine der Hauptrollen spielenC. v.t. (-rr-) the film co-starred Robert Redford = der Film zeigte Robert Redford in einer der Hauptrollenco-star in other Oxford dictionaries Definition of co-star in the British & World English dictionary Definition of co-star in the US English dictionary