(~s)
A ~ is a drug which is used to treat people who have high blood pressure or heart problems.
N-COUNT
(~s)
A ~ is a drug which is used to treat people who have high blood pressure or heart problems.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012