You know when someone gets something amputated and they put a piece of wood or cloth in the soon-to-be amputee's mouth for what I guess is anesthesia. There has just got to be a name for it. But I can't find it anywhere.
Doctors?
Doctors?
I don't think I've ever heard of a special name for the thing someone bites down on.
"put a piece of wood or cloth in the soon-to-be amputee's mouth "
Bit (noun)--anything that curbs or restrains (dictionary.com)
Not sure if this was the word you were looking for