- the brother of one's husband or wife.
- the husband of one's sister.
- the husband of one's wife's or husband's sister.
Origin of brother-in-law
Examples from the Web for brother-in-law
In the video, Solange smacks and kicks her brother-in-law while Beyonce DOESN'T EVEN FLINCH.Solange Smacks Jay Z, Legolas Slaps Bieber, and the Biggest Celebrity Feuds of the Year
December 24, 2014
Seven days after receiving the letter from Navarro, Abidogun had yet to break the “bad news” to his brother-in-law and his nephew.Ebola Racism Reaches a New Low in Texas
October 15, 2014
Her mother, brother, and nephew—and her brother-in-law did it, too.Quincy Jones Talks Chicago’s Mean Streets, Why Kanye West Is No Michael Jackson, and Bieber
September 25, 2014
Then he put his acting career on hold for two years to make a gonzo mockumentary with his brother-in-law, Joaquin Phoenix.Casey Affleck, Star of ‘Out of the Furnace,’ on His Hollywood Struggles
December 2, 2013
My brother-in-law suggested that I email a photo to them, and the rest is history.Celebrating Sikh Style
October 3, 2013
I suppose he'll be a little more fastidious, as the brother-in-law of Shepler.The Spenders
Harry Leon Wilson
He cut off my brother-in-law's leg—charged him as much as if he had grown a new one for him.K
Mary Roberts Rinehart
Mrs. MacDermott almost shouted the words at her brother-in-law.The Foolish Lovers
St. John G. Ervine
And, moreover, his wife was in charge of his brother-in-law.
He looked dubiously at his brother-in-law, but he did not ask him for information.
- the brother of one's wife or husband
- the husband of one's sister
- the husband of the sister of one's husband or wife
Word Origin and History for brother-in-law
c.1300; also brother in law; see brother. In Arabic, Urdu, Swahili, etc., brother-in-law, when addressed to a male who is not a brother-in-law, is an extreme insult, with implications of "I slept with your sister."