(~s)
A ~ is a drug that makes your body work faster, often increasing your heart rate and making you less likely to sleep.
N-COUNT
(~s)
A ~ is a drug that makes your body work faster, often increasing your heart rate and making you less likely to sleep.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012