look up any word, like cleveland steamer:
A penis which is greater in width than in length.
Your grundle looks funny.
by Ben Now August 31, 2006
The male penis (dick, pizzle, chode, shlong, ect.)
You got a hell of a grundle man.
by Eoj June 19, 2005
Grundle a knappy groddy pussy
Mellissa O'Brain has a groddy grundle.
by Anonymous May 07, 2003