open house—
1. said of general hospitality and readiness to welcome guests at any time:
- Their home was an open house where the door was never locked and everyone was welcome.
2. a social event, such as a presentation, which everybody can attend:
- The format of the meeting was an open house in which the design concepts were presented for public review.
open housing—(U.S.) property that can be rented or bought without restriction on racial or ethnic ground:
- The objection, apart from prejudice, is usually economic because open housing may drive down values of real estate.