Definitions for "Downburst"
Violent and damaging downdraught striking the surface of the Earth violently. Associated with a severe thunderstorm.
A strong downdraft current of air from a cumulonimbus cloud, often associated with intense thunderstorms. Downdrafts may produce damaging winds at the surface.
A severe localized downdraft that can be experienced beneath a severe thunderstorm. (Compare Microburst and Macroburst.)