Som I was paging through the good ol' Bedford there and came across dumb show, which told me to look at pantomime. Now I have never before heard of this term dumb show, so I went to pantomime and was told that a dumb show is nothing more than "an episode of pantomime performed in a play that otherwise involves speech". So now I know, and if you are reading this now you know, "and knowing is half the battle".