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English definition of “mother-in-law”

mother-in-law

noun [C]  /ˈmʌð·ər·ɪnˌlɔ/ (plural mothers-in-law  /ˈmʌð·ərz·ɪnˌlɔ/) us  

mother-in-law noun [C] (PARENT)

the mother of someone’s wife or husband
(Definition of mother-in-law from the Cambridge Academic Content Dictionary © Cambridge University Press)
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