立たて役やく者しゃ

noun

leading actor; star

Originally a kabuki term for the main actor; now used broadly for the star or lead in any performance.

• 彼かれはその舞ぶ台たいの立たて役やく者しゃとして大だい成せい功こうを収おさめた。

  He achieved great success as the leading actor in that play.

noun

leading figure; central figure; key person

Figurative extension: a person who plays the most important role in a project, organization, or event.

• 彼かの女じょは会かい社しゃの再さい建けんの立たて役やく者しゃだ。

  She is the key figure in the company's reconstruction.