A roulette wheel is read as surrendering an outcome to pure chance. Dream books link it to a waking decision that feels out of your hands, and to the dizziness of waiting for the ball to settle.
When this appeared in your dream, what were you feeling?
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.