A searchlight sweeping the dark is read as attention that exposes what was hidden. Dream books link it to fear of being seen, or a wish to find what is lost.
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.