A chastity belt is read as desire placed under lock — control, restriction or mistrust in a close bond. Dream books see it as a question of who holds the key to your freedom.
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.