A stepfather is read as authority or protection that came from outside the original family. Tradition sees in him how you have adjusted to change and to new rules at home.
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.