I'm really confused. Can a girl have a bussy?

So as we know, bussy= boy pussy, i.e. asshole.I was telling a female friend about what a bussy is and she's confusingly said "so does that means I have a bussy too because I have an asshole?".I said no she doesn't because she's not a boy, but now I'm wondering if she has a point. Is a bussy the asshole of only a male, or can it be an asshole on anyone?Please help.