What does "topbill" mean?

To star in; to be the leading actor or actress in (a series, etc.).

What is a synonym for "topbill"?

Common synonyms include: headline.

verb

verb ·Rare ·Advanced level

Verb

1
To star in; to be the leading actor or actress in (a series, etc.). Philippines, especially, transitive
"Before she leaves for Spain in August, she will topbill a show with other classical singers entitled Best […]"
2
To give top billing to. Philippines, especially, transitive
"Michael Dudikoff is top-billed as the professional hitman who trains him."

"Before she leaves for Spain in August, she will topbill a show with other classical singers entitled Best […]"

From top + bill.