Longman Dictionary of Contemporary English
in-laws
noun
EXAMPLES FROM OTHER ENTRIES
▪ My in-laws are coming to visit next week.
▪ We lived with my in-laws until we had enough money to buy a house of our own.
EXAMPLES FROM CORPUS
▪ But without the financial support from her in-laws it was difficult to continue, so she returned home without completing the program.
▪ Elizabeth and her children were kicked out of the Wartburg castle by the in-laws.
▪ Her elder sister had married and moved to her in-laws.
▪ I understand they were both hoping for a child, as well as his in-laws.
▪ Jimmy: Because his in-laws live there.
▪ My in-laws didn't know - I didn't tell them.
▪ Providence saw fit to favour me with wonderful in-laws.
▪ Then wash up, change your clothes, and come greet your future in-laws.
Wiktionary
in-laws
n. (plural of in-law English); the family of one's spouse
Wikipedia
In-Laws
In-Laws is an American situation comedy that aired on NBC from September 2002 until January 2003. The series starred Bonnie Somerville, Jean Smart, Elon Gold, and Dennis Farina.