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English definition of “'s”

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's

uk   /-s/ /-z/ us  
short form of is: It's in the cupboard. short form of has: She's gone home. informal short form of does (only used in spoken questions): How's this thing work? short form of us (only used after "let"): Let's go swimming this afternoon.
(Definition of 's from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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