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English definition of “life's work”

life's work

noun [U]     /ˌlaɪfsˈwɜːk/ US  /-ˈwɝːk/ UK (US lifework)
Your life's work is the work that is most important to you and to which you give a lot of time and effort: Her garden was her life's work.Work, working and the workplaceWorking hours and periods of work
(Definition of life's work noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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