CLOUDBURST Meaning of CLOUDBURST in English ˈ ̷ ̷ˌ ̷ ̷ noun( -s ) 1. : a sudden copious rainfall as if a whole cloud had been precipitated at once2. : deluge 23. : pseudopregnancy of the goat Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012