The ceiling marks the upper limit of a room, so it is read as the limits you feel on growth or ambition. A high ceiling stands for room to expand, a stained one for worries overhead.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.