Since ancient writing systems the wavy line has stood for water, and dream books read it as feelings in motion. Its rise and fall also suggests rhythm, moods that come and go, or a lack of firm footing.
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.