mother-in-law

[ muhth-er-in-law ]
/ ˈmʌð ər ɪnˌlɔ /

noun, plural moth·ers-in-law.

the mother of one's husband or wife.

Origin of mother-in-law

1350–1400; Middle English modyr in lawe

Example sentences from the Web for mother-in-law

British Dictionary definitions for mother-in-law

mother-in-law

noun plural mothers-in-law

the mother of one's wife or husband