Things dropped down a chute vanish below without ceremony. Tradition reads it as letting go of what is used up, or as something sent out of sight that may resurface later.
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.