Anything or place that has been effected by niggers, such as a house, neighborhood, car etc.
Did you here about the family of coons that moved into the nice lilly white neighborhood? It won't be long before it becomes niggerized, there will garbage over the yard, windowsbroken out, a 55 gallon drum (grill) in the drive. There goes the neighborhood!
its like the word 'nigga' but it makes you way cooler to say it.
It can be used to refer to a small storage building where 'niggas' put away things like knives and bloody gloves (see meaning of shed)
Catherine: Whats good niggashed?
George: Watchu thankin(thinking or doing)!?