A boiled egg stands for something settled and fixed — an idea that has set and can no longer change shape. Its firmness is read as stability, sometimes as rigidity.
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.