- 1[uncountable, singular] a place or a time at which visitors are welcome It's always open house at their place.
- 2(North American English) (British English open day) [countable] a day when people can visit a school, an organization, etc. and see the work that is done there
- 3[countable] (North American English) a time when people who are interested in buying a particular house or apartment can look around it
Check pronunciation: open house
