The meaning of Missing in dream | Dream interpretation
A missing article in a dream, like a piece of clothing or textbook, suggests you are feeling out of control in some aspect of your life.
A missing article, such as a set of keys, denotes a sense of being out of control.
A missed plane, bus, train, appointment, or time commitment can symbolize a missed opportunity, and the frustration of being behind and unorganized is also suggested. (See also Loss of Something).