Wind is what happens when air moves along the earth's surface due to disparities in pressure levels in the atmosphere.
- Wind patterns are very complex, especially at scales less than 100 kilometers. If these wind directions and speeds are averaged over large sections of Earth's surface, a global circulation pattern emerges--a pattern shaped by solar heating and Earth's rotation. 
In a medical context, wind is a commonly used euphemism for flatus.
- El Nino: The child returns - educational web site