A time machine is read as the wish to revisit the past or glimpse what lies ahead. Dream books see it as regret, nostalgia or longing to change a moment that has passed.
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.