by Noxella October 9, 2017

A scabby or calloused set of male / female genitalia or pubic area. The hardened and crustaceous state of the genitalia causes it to grind on their partner's reciprocal pubic area thus causing a grinding sensation.
"Jenny, why are you walking funny?"
"I'm chaffed from Reginald's girth grinder..."
OR
"Reginald, why do you scream when you pee lately?"
"Jenny's girth grinder ripped my tip off..."
"I'm chaffed from Reginald's girth grinder..."
OR
"Reginald, why do you scream when you pee lately?"
"Jenny's girth grinder ripped my tip off..."
by Ham Pony February 24, 2018

by wemmaaaaa April 12, 2019

by JackinOffSquares December 7, 2021

by firerome101 May 8, 2018

To not only master surviving in the hood, but to be insanely ripped by doing nonstop calisthenics and having a wolfcut.
Jaden, an urban grinder never gets bullied because people can see his physique and how tough the man is.
by Real YT Tartarus January 15, 2023

by LaBelleEstelle March 12, 2014
