A nickname is read as how others see you, affectionately or not. Dream books ask whether the name fits who you are now or holds you to an older picture.
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.