1.) A wife or significant other, usually referred to as an "old blade".
2.) Derog. A loud cantankerous woman.
3.) Irish. Derog. A gaudy dressed or bizarre hot mess. Sadly, she's unaware that she stands out in the crowd.
Your first thought will be, "Wow, look at the T & A on her!" Your second thought will be, "Damn, but her face, what happened!?!" Butterface...but her face is what happened to this poor ugly woman with a banging body. “Must be the ass, because it ain't your face!”