A masquerade is read as the play between hiding and revealing. Tradition takes it as freedom to try on another self, or as uncertainty about who is being honest with whom.
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.