The clown is read as joy and as the mask over sorrow. Dream books see it as playfulness, or as unease with something that seems funny but is not.
Where in your waking life have you met something like this lately?
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.