lifesaver

figuratively

Someone or something that saves lives. / (figuratively) Someone or something that is very useful or helpful.

Japanese Meaning

人命を救うもの、あるいは人命を救う人 / 非常に役に立つもの、助けになるもの

The paramedic who arrived within minutes was a real lifesaver for the accident victims.

数分で到着した救急隊員は、事故の被害者たちにとってまさに命の恩人だった。

Sense（1）

Someone or something that saves lives.

My dad loves his job as a surf lifesaver.

Sense（2）

(figuratively) Someone or something that is very useful or helpful.

Thank you so much for fixing my car; you're a real lifesaver!

lifesavers

（ plural ）