Noun
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line thrown from a vessel that people can cling to in order to save themselves from drowning
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line that raises or lowers a deep-sea diver
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support that enables people to survive or to continue doing something (often by providing an essential connection)
"the airlift provided a lifeline for Berlin"
"she offered me a lifeline in my time of grief"
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a crease on the palm
its length is said by palmists to indicate how long you will live
- line of life - life line