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Noun: mother-in-law (mothers-in-law)  'mú-dhu-rin,lo
  1. The mother of your spouse

Derived forms: mothers-in-law

Type of: female parent, in-law, ma [informal], mam [UK, informal], mama [informal], mamma [informal], mammy [informal], mom [N. Amer, informal], momma [N. Amer, informal], mommy [N. Amer, informal], mother, mum [Brit, informal], mummy [informal], relative-in-law, supermom [informal]

Encyclopedia: Mother-in-law