The drekavac is known only by its scream in the night, and dream books read it as unease that has a sound but no shape. It stands for a worry heard clearly yet never quite seen.
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.