A moon that looms enormous over the horizon is read as emotions or the unconscious taking up more room than usual. It can feel awe-inspiring or overwhelming, depending on the mood of the dream.
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.