1.<美,加拿大>(occasion)(学校等的)开放日, 接待日
A week later, Sara and I attended open house at Ted's school.一周后, 我和萨拉参加了特德学校举办的开放日活动。
2.<美,新西兰>(house)(供欲购房者参观的)开放房子
at a Saturday open house earlier this month本月初一个周六买房者可看的房子
3.to keep open house
(always provide hospitality)随时欢迎来访；敞开大门迎客
Father Illtyd kept open house and the boys would congregate in his study during their recreation time, playing cards.伊尔蒂德神父随时欢迎来客, 男孩子们会在娱乐时间聚在他的书房里打扑克。