Old builders used the octagon to pass from a square base to a round dome, so it stands for the step between earth and sky. Its everyday echo is the stop sign — a call to pause before going further.
Has this come up in your dreams before? What was going on in your life then?
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.