0 short form of am not, is not, are not, has not, or have not:
1 contraction of am not, is not, are not, has not, or have not:
"Is Terry here?" "No, he ain’t coming in today."
As my old ma used to say, you can't spend what you ain't got.
So he's a bit of an idiot, but he's still my bruv, ain't he?
I ain't done nothing wrong.
