Meaning of “lifeline” in the English Dictionary

(Definition of “lifeline” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"lifeline" in American English

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lifelinenoun [ C ]

us /ˈlɑɪfˌlɑɪn/

something, esp. a way of getting help, on which you depend:

Airplanes are this Alaskan town’s lifeline.

(Definition of “lifeline” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"lifeline" in Business English

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lifelinenoun [ C ]

uk /ˈlaɪflaɪn/ us

something that will help a person, organization, or country to continue to exist or operate in the same way:

The government is going to throw a lifeline to the troubled motor industry.
They won what amounted to an economic lifeline that allowed Britain to pay for food, fuel, and other essentials.

(Definition of “lifeline” from the Cambridge Business English Dictionary © Cambridge University Press)