Dreaming of opening a window symbolizes that you will accept new ideas and new information.
When a woman dreams of opening a window, it may also indicate that she subconsciously has the urge to have sex. If you open the window and see the charming starry sky, it shows that you are only idealistic about love and don't have the courage to experience it yourself. But if you dream of a robber breaking through the window, it means that you have a very strong sexual impulse, but you should be stopped by reason and morality in your life.
Dreaming of the back: usually expressing opposition, rejection, staying away, etc.
Dreaming that someone is turning your back on you: it implies that you will encounter opposition or jealousy, and someone may bring you trouble. The back at this time is a reflection of other people's attitudes.