Dictionary

mother–in–law

noun moth·er–in–law \ˈmə-thər-ən-ˌl, ˈth-rən-, ˈmə-thərn-\

: the mother of your husband or wife

plural moth·ers–in–law \ˈmə-thər-zən-\

Full Definition of MOTHER-IN-LAW

1
:  the mother of one's spouse
2
archaic :  stepmother
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First Known Use of MOTHER-IN-LAW

14th century
MOTHERS-IN-LAW Defined for Kids

mother–in–law

noun moth·er–in–law \ˈmə-thər-ən-ˌl\
plural mothers–in–law

Definition of MOTHER-IN-LAW for Kids

:  the mother of someone's husband or wife

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