A dormitory means sleeping among many others, so it is read as belonging to a group, a phase of shared youth, or a lack of private space. Tradition also links it to rules and fitting in.
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.