- a party or reception during which anyone who wishes may visit to share in a celebration, meet a special guest, etc.
- a time during which a school, institution, etc., is open to the public for exhibition or for some specific occasion.
- a house hospitably open to all friends who may wish to visit it.
- to be prepared to entertain visitors at any time: They keep open house for artists and writers.
- an occasion on which an institution, such as a school, is open for inspection by the public
- to be always ready to provide hospitality
- a house available for inspection by prospective buyers
