Top Definition
A Long thin penis is known as a Gronblom if the diameter is at least the same as a nickle and minimum six inches
Steve has a Gronblom in his pants
by Egg1013 December 11, 2013

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.

×