The sandman sprinkles sleep into tired eyes, and dreaming of him is read as the wish to rest, to let go of the day and surrender to the night. Older versions add a darker edge, a reminder of how vulnerable sleep can feel.
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.