This sound is read as the final signs that something is ending — a situation that has been fading and is now nearly over. Tradition treats it as a symbol of an ending you can no longer ignore.
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.