(~s)
An ~ is a layer of oil that is floating on the sea or on a lake because it has accidentally come out of a ship or container.
The ~ is now 35 miles long.
N-COUNT
(~s)
An ~ is a layer of oil that is floating on the sea or on a lake because it has accidentally come out of a ship or container.
The ~ is now 35 miles long.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012