That is just a slang word. Butt is a common word that just means "end," like the end of a cigarette or a rifle. So the back end of the body, and the word hole makes it more specific that you mean the opening. Thus the opening in the back of the human body.
Yes, it is another term used for your anus
the "Svincter" or sland for "butthole"
in Portuguese: anusLatin for butthole is anus.
I believe a scientific word for Butthole is "Anus"
butthole
Chinese for "butthole"
stick your finger in his butthole and call it macaroni stick your finger in his butthole and call it macaroni stick your finger in his butthole and call it macaroni
my butthole!
Butthole-ish
My butthole
in your butthole
butthole or anus