Cas ‧ a ‧ blan ‧ ca /ˌkæsəˈblæŋkə $ ˌkɑːsəˈblɑː-/ BrE AmE
1 . the largest city in Morocco, on the Atlantic coast
2 . one of the most popular films in the history of the cinema, made in 1942 with Humphrey ↑ Bogart and Ingrid ↑ Bergman . Casablanca is a romantic story about a man called Rick who has a café in Casablanca, and who helps a husband and wife escape from the Nazis. The café has a man called Sam who plays the piano, and there is a famous scene when Rick asks him to play a song called ‘As Time Goes By’, saying ‘Play it’, though many people think he says ‘Play it again, Sam’.