1. a sudden and very heavy rainfall.
Cloudburst is an Americanism whose construction is similar to, and may be a translation of, the German noun with the same meaning, Wolkenbruch. It entered English in the early 1800s.
“Sunrise doesn’t last all morning, a cloudburst doesn’t last all day, seems my love is up and has left you with no warning. It’s not always going to be this grey. All things must pass, all things must pass away.”
- George Harrison