Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Sister-in-law \Sis"ter-in-law`\, n.; pl. Sisters-in-law. The sister of one's husband or wife; also, the wife of one's brother; sometimes, the wife of one's husband's or wife's brother.
Douglas Harper's Etymology Dictionary
Wiktionary
n. 1 A female relative of one's generation, separated by one degree of marriage: 2 # The sister of one's spouse. 3 # The wife of one's sibling. 4 (context less common English) co-sister-in-law: The wife of one's sibling-in-law. 5 # The wife of the child of one's spouse. 6 # The sister of the spouse of one's sibling.
WordNet
n. the sister of your spouse
[also: sisters-in-law (pl)]
Usage examples of "sister-in-law".
MacMasters, at an old, abandoned wildcat well that T-Dub had described, Bowie and Chicamaw were getting out and T-Dub was going in to contact his sister-in-law.
Picture, then, the pride with which, one early day of her new bridehood, she drove to the Palace of St Cloud in the gorgeous Borghese State carriage, behind six horses, and with an escort of torch-bearers, to pay a formal call on her sister-in-law, Josephine, Empress-to-be.
After supper the poor abbe went sadly away, and the count took me to my room, telling me that I could sleep securely in spite of the lack of keys for his sisters-in-law who were lodged close by were no better off.
She had already decided that she would seek a private audience with her sister-in-law as soon as they reached Dilling ham Court.
She could either help an Earthling escape or she could standby mute while one become her sister-in-law.
She was so enrapt in her own thoughts that she did not notice the expression on the face of her sister-in-law.
Count Daniel, the eldest of the family, had married a Countess Gozzi, and a young and wealthy government official, who had married a god-daughter of the old countess, was there with his wife and his sister-in-law.
On the 30th he wrote Francesca that he had been well received by his sister-in-law and by his brother, Francesco Casanova, the painter.
She had had courage enough, and presence of mind, to joke about the matter when her sister-in-law spoke to her, and yet she was quite aware that it was no joking matter.
After the experience of having her luxurious home in Jumar repossessed and being deported with her twin toddlers because she no longer had any means of support, her sister-in-law, Lizzie, was feeling very sorry for herself.
The tasteful drawing-room of his ladylike mother and his aristocratic sister-in-law!
There have been a few representations in English within this time and a considerable number in Italian, our operatic institutions being quick, as a rule, to put it upon the stage whenever they have at command a soprano leggiero with a voice of sufficient range and flexibility to meet the demands of the extraordinary music which Mozart wrote for the Queen of Night to oblige his voluble-throated sister-in-law, Mme.
Beryl would be on her way back to Alaska, and Nance the anorexic was about to become my sister-in-law.
Sir Pitt took the opportunity of appearing before his sister-in-law in his uniform-- that old diplomatic suit which he had worn when attache to the Pumpernickel legation.
Beyond his unique sisters-in-law, the noble ladies he met all seemed to be jaded, spoiled creatures, eager for a bedding, but petulant and demanding of luxuries and attention.