The locksmith is read as the one who opens what is closed. Tradition links it to finding a way into a stuck situation, or into a part of yourself kept shut.
When this appeared in your dream, what were you feeling?
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.