Describes a man (usually a northern businessman) who has so much muscle he can barely close his arms.
Percy: Alex, are you a grott?
Alex: Yeah, people look at me and think "grott" because i can hardly close my arms. It helps also that i have business to take care of.
A person from the Niles region of Southwest Michigan that is known as one of the dregs of society. Gritters are usually known for being unkempt and wearing pajamas to Walmart, and being of a lower IQ, while thinking they are some sort of dirtbag Patriarche.
The female version is a Gritta, and a particularly well known Gritter, with the proper pedigree is known as a Legacy Gritter