Greyback 

A derisive and rather unkind name for a white person, often used in UK.

"you're seeing a greyback now is it?"

"you're such a greyback"

Greyback by Rumpole of the Bailey April 26, 2010

Greyback 

Greybacks are dominant female gorillas.

Ex: The Greybacks are strong dominant females

Greyback by http://www.GorillaMic.com January 3, 2011

Fenrir Greyback 

stupid bitch baby who bit my beautiful boy Remus Lupin.

“i fucking hate fenrir greyback 🙄”

Fenrir Greyback by Tæv/Remus December 20, 2020

Fenrir Greyback 

Nasty little werewolf who enjoys tearing people,and their lives, apart.
Takes pride in attacking young children.
Works along side voldemort although not an official deatheather!=)

Voldemort:I'm sorry mate your just not the right material for a Deatheater.

Fenrir Greyback:Well, claw me if you ever change your mind.

Voldemort:em...NO! *disapperates*

Fenrir Greyback by crowie October 31, 2008

Grayback 

Another term or name for a Redneck or Southern Hick, especially one that is loyal to the Confederacy. This word is derived from the color of the jacket that Southern soldiers wore when fighting for the Confederacy during the Civil War.
The great part about calling a redneck this is that most of them are too dumb to realize that this is an insult. But that is also because no one today has ever used it frequently, if they ever have.

Hey! Quit yakkin, you grayback; my ears are starting ta bleed.

Grayback by The Kentucky Yankee August 12, 2004