Envy is read as wanting what someone else has. Tradition takes it as an honest map of your own unmet desires, pointing to what you might want to pursue for yourself.
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.