Meaning: the mother of your spouse
A quinzied mother-in-law had knocked his lares and penates sky-high.
But when her mother-in-law saw it was a girl, she wrung her hands and wept, saying:
Vassili led a good and happy life with his dear wife, and his kind mother-in-law lived with them.
If he beats his mother-in-law, and eats asparagus with the sugar-tongs, and doesn't pay his grocer, the public have a right to know it.
When I did come up to our apartment I found Donald on his knees by his bed with his Testament and an old hymn book of my mother-in-law's.
Two years ago she had come with her child to make her home amongst her husband's people, and though at first her mother-in-law, Mrs. Platt, was inclined to look upon her contemptuously as a poor, delicate, useless creature, time proved to her that for steady, quiet work no one could eclipse her daughter-in-law.