牽けん引いん役やく

noun

leading force; driving force; leader

Refers to a person, group, or thing that plays a central role in pulling an effort forward, like a driving force or key leader in a project, movement, or team.

• 彼かれはプロジェクトの牽けん引いん役やくとして活かつ躍やくした。

  He played an active role as the driving force behind the project.

• この新しん技ぎ術じゅつが業ぎょう界かいの牽けん引いん役やくになるだろう。

  This new technology will likely become the leading force in the industry.