立たて物もの

noun

leading actor; star performer

Specifically refers to the top-billed actor in a theatrical or performance context.

• 彼かれはこの劇げき団だんの立たて物ものだ。

  He is the leading actor of this theater company.

noun

leading figure; leader; central person

Extended from the theatrical sense to refer to a prominent person in any group or field.

• 彼かの女じょはプロジェクトの立たて物ものとして活かつ躍やくした。

  She played an active role as the leading figure of the project.