(~s)
A ~ is a dark-coloured board that you can write on with chalk. Chalkboards are often used by teachers in the classroom. (mainly AM; in BRIT, use blackboard )
N-COUNT
(~s)
A ~ is a dark-coloured board that you can write on with chalk. Chalkboards are often used by teachers in the classroom. (mainly AM; in BRIT, use blackboard )
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012