Pistol = One chamber
Revolver = Multiple Chambers
That is how I've always thought about it. I think if you really get down to it a pistol is any firearm meant to be shot with one hand so that includes revolvers. So a revolver is a pistol.
Perhaps, if I am very lucky, the feeble efforts of my lifetime will someday be noticed, and maybe, in some small way, they will be acknowledged as the greatest works of genius ever created by Man.
- Jack Handey