自じ動どう連れん結けつ機き

noun

automatic coupler

A device that automatically connects railway cars when they are pushed together, without manual intervention.

• 日本にほんの鉄てつ道どう車しゃ両りょうの多おおくは自じ動どう連れん結けつ機きを装そう備びしている。

  Many Japanese railway cars are equipped with automatic couplers.