The top hat is read as ceremony, status and a touch of showmanship. Dream books also connect it to the magician’s trick — something appearing from where you least expect it.
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.