Two / Duality in Dreams: Meaning in Depth Psychology
Two is the split. Pairs in dreams tend to mark opposites in you facing each other: the shown and the hidden, the wish and the fear, the two roads. Tension between two of anything is often the engine the dream is running on.
THE CORE MEANING
Opposition, polarity, the split into conscious and unconscious, the tension of opposites that drives individuation. Every pair: light/dark, male/female, ego/shadow, persona/self.
CONNECTS TO
All of that is the universal meaning. But what does two / duality mean to you? Your personal association matters more than any dictionary.