Wind sprint is a familiar term to athletes. For them it means to sprint or go very fast.
Athletes have to go very fast to get winded.
If you want to become a person who burns LOTS of fat during aerobic exercise, then you have to raise the level at which you exercise. Plus, wind sprints add intensity and challenge to your workouts without the danger of getting injured. During the middle of your aerobic exercise, add several short bursts of intensity by going faster or increasing the resistance. Don't try to go as fast or as hard as you can. Just go fast enough so that after 20-40 seconds you are breathing harder.