A nanny is read as care given by someone outside the family. Tradition sees the figure as support you rely on, or as the feeling that your care is being handed to others.
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.