noun
[ pl. ] ( informal ) your relatives by marriage, especially the parents of your husband or wife :
We're visiting my in-laws on Sunday.
noun
[ pl. ] ( informal ) your relatives by marriage, especially the parents of your husband or wife :
We're visiting my in-laws on Sunday.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005