命いのち綱づな

noun

lifeline; safety rope; safety tether

A rope or line used to protect a person from falling, especially in climbing, construction, or rescue work. Also used figuratively for something that provides essential support or a last resort.

• 高こう所しょ作さ業ぎょうでは必かならず命いのち綱づなを着ちゃく用ようしてください。

  Always wear a safety rope when working at heights.

• 彼かの女じょの励はげましが、私わたしにとって命いのち綱づなだった。

  Her encouragement was a lifeline for me.