With no engine of its own, the glider is read as moving through life on currents rather than effort. Dream books connect it to trust, quiet freedom and knowing how to use the conditions that are already there.
Has this come up in your dreams before? What was going on in your life then?
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.