(~s)
If someone is on their ~, they are in a bed and about to die.
He promised his mother on her ~ that he would never marry.
N-COUNT: usu sing, usu with poss, oft on N
(~s)
If someone is on their ~, they are in a bed and about to die.
He promised his mother on her ~ that he would never marry.
N-COUNT: usu sing, usu with poss, oft on N
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012