An eggshell is read as fragility and protection at once — the thin wall around something growing. Walking on eggshells in a dream points to tension and careful behaviour around someone.
Where in your waking life have you met something like this lately?
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.