A room with no way out is read as a situation that feels closed, or a habit of thought that keeps circling. Dream books also see it as the mind asking for a different way through, not more force.
When this appeared in your dream, what were you feeling?
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.