(~s)
A ~ is something such as a life jacket, which helps you to float when you have fallen into deep water. (AM)
N-COUNT
(~s)
A ~ is something such as a life jacket, which helps you to float when you have fallen into deep water. (AM)
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012