A plate of metal or other material on the door of a house or room, bearing the name and sometimes the business of the occupant.(noun)
The Century Dictionary (Public Domain)
Use "door-plate" in a sentence
"On the TV screen, the door-plate was pretty clearly seen as "815", but I can see from trying to make the image clearer that it could be interpreted as "813"."
"He told me one day that literature was not a trade; that it was no craft; that the professed author was merely an amateur with a door-plate."
"Brown, not a Jones, not a Robinson; they are all names that one would stop and look at on a door-plate."