Английский словарь американских идиом - keep open house

{v. phr.} To offer hospitality and entertain those who come at any given time on a certain day or afternoon. * /Beth and Charlie have a cottage by the lake where they keep open house on Saturday afternoons during the summer./ KEEP OUT (OF) {v. phr.} 1. To stay out; remain out of. * /The sign on the fence said, "Danger! Keep out!"/ 2. To stave off; not allow in. * /The border patrol near El Paso, Texas, is trying to keep illegal immigrants out of the United States./