A wall lamp. Or in other words, a lamp that goes on the wall.
Except of course if you keep it in storage, not wanting to use it. In such a case you don't have to hang it on a wall. But you might as well sell it or donate it then. What a waste not using a beautiful lamp like this. You might make another person really happy with it. I wouldn't mind having a lamp like this. Don't tell me you have a lamp in storage that is just gathering dust. Is this your sense of humor?