Sing ‧ in' in the Rain /ˌsɪŋɪn ɪn ðə ˈreɪn/ BrE AmE
(1952) a very famous and popular US ↑ musical (=a film that uses singing and dancing to tell a story) in which Gene ↑ Kelly and Debbie Reynolds appear. The film contains a famous scene in which Gene Kelly dances in the street while it is raining, and sings ‘Singin' in the Rain’.