topline

Meanings

1. The upper curvature of a horse's or dog's withers, back, and loin.
2. Top billing.
3. The first line, the topmost-ranking line; the most important thing.
4. The edge that runs along the top of the opening of a shoe.
5. The vocal parts of a piece of music (particularly pop).

1. To bill (a performer) as the primary entertainer in a production.
2. To be billed as the primary entertainer in (a production).
3. (music) To compose and/or sing the vocal part of a song (particularly pop).

Etymology

From top + line.