(~s)
A ~ is a device consisting of a wheel over which a rope or chain is pulled in order to lift heavy objects.
N-COUNT
(~s)
A ~ is a device consisting of a wheel over which a rope or chain is pulled in order to lift heavy objects.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012