(~s)
A ~ is a substance that gives something a particular colour. (FORMAL)
The Romans used natural ~s on their fabrics and walls.
N-MASS
(~s)
A ~ is a substance that gives something a particular colour. (FORMAL)
The Romans used natural ~s on their fabrics and walls.
N-MASS
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012