sister-in-law

[ sis-ter-in-law ]

/ ˈsɪs tər ɪnˌlɔ /

the sister of one's husband or wife.

the wife of one's brother.

the wife of the brother of one's husband or wife.

Origin of sister-in-law

1400–50; late Middle English. See sister, in, law¹

Just a week after her divorce, she was invited to a wedding by her sister-in-law.

A Sunni-Shia Love Story Imperiled by al Qaeda |Ruth Michaelson |December 26, 2014 |DAILY BEAST
Your sister-in-law is kinder and truly taken aback that you look “so healthy!”

How to Make It Through Thanksgiving Alive |Lizzie Crocker |November 26, 2014 |DAILY BEAST
It appears that Jay Z has finally found his 100th problem, and it is his sister-in-law.

The Video of Solange Attacking Jay Z Is Deeply Upsetting and Also Fantastic |Kevin Fallon |May 12, 2014 |DAILY BEAST
His brother and sister-in-law (Garrett Dillahunt and Kate Walsh) hate each other.

Courteney Cox Gets Personal About Her Directorial Debut, ‘Just Before I Go’ |Kevin Fallon |April 29, 2014 |DAILY BEAST

One week after that attack, her brother, sister, and sister-in-law were killed by a mortar shell fired by the Syrian military.

Obama Administration Stiffs Chemical Survivors on New Claim |Josh Rogin, Noah Shachtman |February 20, 2014 |DAILY BEAST
This was nearly evening, and I did not see him again, as he returned to the lady, who was his sister-in-law from the East.

Behind the Scenes |Elizabeth Keckley
Did you identify the man in the lineup before your sister-in-law?

Warren Commission (3 of 26): Hearings Vol. III (of 15) |The President's Commission on the Assassination of President Kennedy
Are not the sentiments of the Duchesses sister-in-law, the Comtesse Diane, in direct opposition to the absolute monarchy?

The Secret Memoirs of Louis XV./XVI, Complete |Madame du Hausset, an "Unknown English Girl" and the Princess Lamballe
His sister-in-law screamed faintly, then cowered in her chair and stared at him mutely.

The Power and the Glory |Grace MacGowan Cooke
Alice was my sister-in-law, and if Ravenor deserted or ill-used her, I have the right to call him to account for it.

Mr. Marx's Secret |E. Phillips Oppenheim

sister-in-law

the sister of one's husband or wife

the wife of one's brother