Top Definition
a cloud that produces bad weather
Bob: that looks like a cumulonimbus cloud Chris get your ass in the house Chris: ok ur the cloud expert
by weathrguy April 27, 2010
2 Words related to cumulonimbus

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×