A weight pressing on the chest is read as heavy feelings — worry, grief or responsibility — that sit on you at night. Folk tradition gave this sensation many names and figures, and read it as burden rather than threat.
Does the traditional reading fit your dream, or did it mean something else to you?
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.