From Longman Dictionary of Contemporary EnglishRelated topics: Familyin-lawsˈin-laws noun [plural] informalSSFFAMILYyour relatives by marriage, especially the father and mother of your husband or wife → mother-in-law, father-in-lawWe have to spend Christmas with the in-laws.Examples from the Corpusin-laws• Then wash up, change your clothes, and come greet your futurein-laws.• But without the financial support from her in-laws it was difficult to continue, so she returned home without completing the program.• 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.• We lived with my in-laws until we had enough money to buy a house of our own.• My in-laws are coming to visit next week.• My in-laws didn't know - I didn't tell them.• Elizabeth and her children were kicked out of the Wartburg castle by the in-laws.• Providencesawfit to favour me with wonderfulin-laws.