(~s)
A ~ is a specially-built steep slope covered in snow whose lower end curves upwards. People ski down it and go into the air at the end.
N-COUNT
(~s)
A ~ is a specially-built steep slope covered in snow whose lower end curves upwards. People ski down it and go into the air at the end.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012