What Is a Restroom? The term restroom developed from rooms equipped with comfortable sitting areas adjacent to the toilets in restaurants or up-scale theatres and entertainment establishments. These rooms were common from 1900 to the 1970s. They did not indicate the toilet or bathroom in any way. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.