Conversation between two or more characters in a literary work; the words spoken by the actors in a play, film, etc. Also: the style or character of…

With the sense ‘spoken or written as an aside’, as side-remark, side soliloquy, side speech, etc.

In plural. spec. The text of a song or other vocal composition, as distinct from the music; the text of an actor's part.

A row of written or printed letters. plural. The words of an actor's part.