心しん棒ぼう

noun

shaft; axle; mandrel; arbor

Mechanical term for a central rotating rod or spindle that transmits motion or supports parts. 心棒 is the core shaft inside a machine or device.

• この機き械かいの心しん棒ぼうが曲まがってしまった。

  The shaft of this machine has bent.

• 旋せん盤ばんの心しん棒ぼうに材ざい料りょうを取とり付つける。

  Attach the material to the lathe's mandrel.

noun

central figure; core member; linchpin

Figurative use for a person who is the central pillar or driving force of a group or organization.

• 彼かれはチームの心しん棒ぼうとして活かつ躍やくしている。

  He is active as the central figure of the team.

• あの人ひとが会かい社しゃの心しん棒ぼうだ。

  That person is the linchpin of the company.