To dream of a windmill represents feelings about using an unsettling or unstable situation to your own advantage. Making your life easier by using the instability of a situation or conflict. Making the best of a bad situation.
Negatively, a windmill may reflect feelings about using other people’s anger, problems, or instability as a excuse to help yourself. Fear of someone using your problems to make their lives easy. Awareness of yourself of your problems being used by other people. Awareness of yourself using other people’s problems to make your life easy.