Nostalgia is read as a bittersweet pull toward the past. Tradition links it to comfort in memory, and to qualities from an earlier time that the dreamer may want to bring back into the present.
Does the traditional reading fit your dream, or did it mean something else to you?
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.