An empty glass is read as a need not yet met, or as something finished — what was there has been taken in and the space is waiting to be filled again.
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.