(~s)
A ~ is a large ring, usually made of a light substance such as cork, which someone who has fallen into deep water can use to float.
N-COUNT
(~s)
A ~ is a large ring, usually made of a light substance such as cork, which someone who has fallen into deep water can use to float.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012