Historical Horology: Why Do We Say “O’ Clock”?
Frankly, this is a question I hadn’t ever given much thought about it – until I ran across an article that raised the question, and then answered it. Now, making a quick jump to say that the phrase likely comes from “of clock” or “of the clock” isn’t too much of a stretch. But why would that even be of a concern? Where else would you be telling the time from?