What is the name of those door, often metal, at the back of a house? They lead up from the basement, are horizontal or slightly inclined from horizontal, I think often in a concrete frame. The swing to the side and you generally come up stairs to the backyard.
I am looking for the common name for this feature, if there is a common name for them. If not a more professional terms would be good.
This is for a fiction work.
Thank you.