1.
If you say that someone keeps ~, you mean that they welcome friends or visitors to their house whenever they arrive and allow them to stay for as long as they want to.
Father Illtyd kept ~ and the boys would congregate in his study during their recreation time, playing cards or games.
N-UNCOUNT
2.
An ~ is a day on which members of the public are encouraged to visit a particular institution or place to see what it is like. (AM; in BRIT, use open day )
A week later, Sara and I attended ~ at Ted’s school...
N-VAR: also N n