The polka is read as cheerful, bouncing community fun, the dance of village feasts and family gatherings. It tends to reflect a wish for simple joy and belonging, without self-consciousness.
Has this come up in your dreams before? What was going on in your life then?
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.