Top Definition
the protrusion below ones breasts and above the waist that extends out a great deal. may also be confused with beer gut.
due to the size of his thunderlump, Robert was unable to see his penis when he stood up.
by jkin October 23, 2007
5 Words related to thunderlump

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.

√ó