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1. wife-in-law
The relationship that exists between a divorced woman and her ex-husband's new wife.
I am giving my receipe for King Ranch Chicken to my new wife-in-law, but I think I shall leave out the 2 teaspoons of Strychnine.
2. wife-in-law
The term for other prostitutes in a pimp's stable.
As Woman A and Woman B both worked for the same pimp, Woman A called Woman B her wife-in-law
3. Wife-in-law
What two women call each other when they find out that they are married to the same man.
When Heidi went to pick up a marriage application at the court house, she found out that she was still legally married. So, she called her friend and their husband and let them know. The "other" wife said, we are wife-in-laws.