(~s)
Someone’s ~ is the son of their son or daughter.
My ~’s birthday was on Tuesday.
N-COUNT: oft with poss
(~s)
Someone’s ~ is the son of their son or daughter.
My ~’s birthday was on Tuesday.
N-COUNT: oft with poss
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012