The wall above you (under the roof) is called a ceiling.

The word "celling" could mean different things depending on the context, but it's not a standard English word you would find in most dictionaries. Here are possible interpretations: A Typo or Mishearing of "Ceiling": If someone meant "ceiling", it refers to the upper interior surface of a room. Example: "The ceiling in this room is painted white." Slang or Informal Usage: In certain contexts, "celling" might be used informally or as slang. For example: "Celling" as a verb: Sometimes people jokingly say "celling" to describe spending time in a jail cell or being confined. Tech or gaming slang: Rare cases where it could mean "reaching a limit" (like a ceiling). A Typo of "Selling": If you intended "selling", it means to offer something for sale. If you share the context where you found "celling," I can help clarify further!

Can you give the sentence or context it was used in? It’s certainly not a standard word, and not even a slang word that I can find.