OPEN DAY
Meaning of OPEN DAY in English
noun
( BrE ) ( NAmE ˌopen ˈhouse ) a day when people can visit a school, an organization, etc. and see the work that is done there
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005