I am reading "The Tale of Two Cities" by Charles Dickens.
On the first page, it says:
There was a king with a large jaw and a queen with a plain face, on the throne of England; there were a king with a large jaw and a queen with a fair face, on the throne of France.
What does "large jaw" mean?
Is it only strictly referring to someone who really has a large jaw in facial structure? Or does it mean something else?