A hood is traditionally read as withdrawal and privacy — shelter for the head and a shadow over the face. It can stand for introspection, or for not wanting to be recognised.
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.