lifelines - definition, thesaurus and related words from WordNet-Online

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Noun lifeline has 4 senses

line of life, life line, lifeline - a crease on the palm; its length is said by palmists to indicate how long you will live
--₁ is a kind of wrinkle, furrow, crease, crinkle, seam, line
lifeline - 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"
--₂ is a kind of support; connection, link, connectedness
lifeline - line that raises or lowers a deep-sea diver
--₃ is a kind of line
lifeline - line thrown from a vessel that people can cling to in order to save themselves from drowning
--₄ is a kind of line
--₄ has particulars: ridge rope