/ ˈblækbɔːd; NAmE -bɔːrd/ (also chalk·board especially in NAmE ) noun
a large board with a smooth black or dark green surface that teachers write on with a piece of chalk :
to write on the blackboard
—compare whiteboard
/ ˈblækbɔːd; NAmE -bɔːrd/ (also chalk·board especially in NAmE ) noun
a large board with a smooth black or dark green surface that teachers write on with a piece of chalk :
to write on the blackboard
—compare whiteboard
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005