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Definition lifesaver in British English

lifesaver noun

[countable] noun
/ˈlaɪfˌseɪvə(r)/
1

something that prevents someone from being killed

Synonyms and related words
1.1

a person or thing that gets someone out of a difficult situation

Synonyms and related words
2

a lifeguard

Synonyms and related words
Definition lifesaver in British English