| 1. | a party or reception during which anyone who wishes may visit to share in a celebration, meet a special guest, etc. |
| 2. | a time during which a school, institution, etc., is open to the public for exhibition or for some specific occasion. |
| 3. | a house hospitably open to all friends who may wish to visit it. |
| 4. | keep open house, to be prepared to entertain visitors at any time: They keep open house for artists and writers. |
