Sentence:  Avoid boredom. Avoid starvation. Why hang around a homeowner′s refrigerator all day while sitting at a deadbeat <WSD>open house</WSD>? Do what they have done in Australia for years. Hold multiple <WSD>open houses</WSD> in one day. 
Meaning of the word marked with <WSD> tags:  A period of time, usually several hours in a day, during which a house which is for sale is open for inspection or tour by interested parties.