Windy describes weather with lots of moving air. On a windy day, you'll see tree branches swaying, feel your hair blowing around, and maybe struggle to hold onto your papers or hat. Very windy days can make riding a bike harder, turn umbrellas inside out, and send leaves swirling down the street.

Wind happens when air moves from high-pressure areas to low-pressure areas. The greater the difference in pressure, the stronger the wind. Coastal areas tend to be windier than inland places because of temperature differences between land and water.

Some places are naturally windier than others. The planet's windiest spot is Commonwealth Bay in Antarctica, where winds regularly exceed 150 miles per hour. Engineers build wind farms in consistently windy locations, using tall turbines to convert wind energy into electricity.

The word can also describe someone who talks too much without saying much of substance. If your friend gives a windy explanation of why they're late, they're going on and on instead of just getting to the point.