What Does AC-DC Truly Mean?

I don't feel like explain so read my other question. basically i looked up AC-DC on the internet because i was gonna use it for something, but then it said it meant devils child and the name of an Antichrist band. I was looking for a name that meant biual and when i found this i was kind of happy, but then i looked it up to confirm the true meaning and i was highly disappointed. So if you heard the term AC-DC what would you think of? Do people still use it and if they do does it usually mean ? Also could you give me some names or i guess "Slang" terms that re highty APPROPRIATE and mean . Thank You!!!! It'd be helpful if they weren't just one word answers...like you actually explained it. Thank Again!