I actually got asked about that directly by PM by a Russian player, and it's interesting how external viewpoints can challenge what you think you know. The question was "What is a Hellcat? Opinion here is split between a witch and a cat. Both seem to have merit"
I had never thought about it. So, I decided to go looking it up. And, bizarrely, if you look at a dictionary, such as http://www.merriam-w...tionary/hellcat , you get "witch" or http://www.oxforddic...english/hellcat "a violent, spiteful woman." What you don't get is anything referring to felines, ferocity or flames of punishment.
Now, I happen to think that when Buick and Grumman came up with the names "Hellcat", that they had in mind a fierce feline, the cat from hell. But that's my personal opinion formed by years of always thinking that a Hellcat was a fierce kitty. I have absolutely nothing to back that up. On the other hand, according to Webster's, "Hellcat" has meant "witch" for about four hundred years. It's entirely possible that the Russian interpretation of the name is actually more correct than ours.