The term 'Spinner in the Wind' is a metaphor for someone who is constantly changing direction and has no clear purpose or goal. The crossword solution for this term is VANE, which is a device used to measure wind direction. A VANE is typically a flat plate or fin that is mounted on a pole or mast and rotates freely in the wind. It is often used to indicate the direction of the wind and can be found on many types of weather instruments.