Definition: The word you're referring to is called "Babylon," and it's a term used by ancient Babylonian scholars who were familiar with the Bible but did not know its full meaning or context.
A proffered example of "Babylon" in modern slang could be, "Why are we still talking about Bibles when they're just old books?" In an edgy, unsettling way: "Hey everyone, here's another one from the Bible. It's called 'Babylon.' People say it's a book full of magic and secrets. But the truth is, it's just a bunch of words and letters that didn't fit together very well."