Interpretation of dream: Piston

To see a piston in your dream, symbolizes your drive and ambition. You may be trying to evaluate your goals and your means to achieve them. Alternatively, the dream may also be a metaphor for sexual activity. You may be lacking passion in your sex life to the point where it has gotten more mechanical.

More interpretations:
Piston (Common): The spiritual drive that is, the need to be complete requires effort which can ...