A ~ area on something such as a map is one that is coloured darker than the surrounding areas, so that it can be distinguished from them.
ADJ
A ~ area on something such as a map is one that is coloured darker than the surrounding areas, so that it can be distinguished from them.
ADJ
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012