lifesaver
/ˈlaɪfˌseɪvər/
noun
- A person who rescues someone from danger, especially from drowning.
- The coast guard crew are everyday lifesavers for boaters in trouble.
- The lifeguard was a true lifesaver when he pulled the child from the pool.
- She was hailed as a lifesaver after rescuing her neighbor from a fire.
- Something that provides crucial help or relief in a difficult situation.
- Her advice was a lifesaver for me when I was starting my new job.
- That cup of coffee was a lifesaver during the long night of studying.
- The spare tire was a lifesaver when we got a flat on the highway.