Moreover take unto you an iron plate, and set it for a wall of iron between you and the city: and set your face against it, and it shall be besieged, and you shall lay siege against it. This shall be a sign to the house of Israel.
All Commentaries on Ezekiel 4:3 Go To Ezekiel 4
George Leo Haydock
Pan, or plate, on which bread was usually baked. This was to represent the walls of the city. (Calmet)