The sound of chains rattling is read as burdens or guilt that drag behind. Dream books see it as unfinished matters that insist on being heard.
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.