A tank is read as heavy armour and unstoppable force. Dream books see it as defensiveness, conflict in the background or feeling overpowered, and not as a forecast of events.
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.