toplining

Verb

topline (third-person singular simple present toplines, present participle toplining, simple past and past participle toplined)

1. (transitive) To bill (a performer) as the primary entertainer in a production.
   • A popular series of musical shorts he made for Mack Sennett's company in 1930 added to his success as a radio vocalist, and had made him a star by the end of 1931, when Paramount toplined him in The Big Broadcast […]1983, John Kobal, A History of Movie Musicals: Gotta Sing, Gotta Dance, page 147
2. (ambitransitive) To be billed as the primary entertainer in (a production).
   • [Whitney] Houston's success in music led her to topline the features "Waiting to Exhale," "The Preacher's Wife" and the telefilm "Cinderella."Variety https://web.archive.org/web/20120216113023/http://www.variety.com/article/VR1118050123?refCatId=16
3. (transitive) (music) To compose and/or sing the vocal part of a song (particularly pop).

See all 8 meanings of topline