Top Definition
Understanding and abiding to the rules, etiquettes, and codes of the streets. Someone who is street wise will behave in a way that is ghetto fundamental. This includes everything from hustling, slinging hoes, and running with the dope game.
"To survive on the streets is rough. You need to be ghetto fundamental if you want to make it these days."
by DJ Triggahappy December 10, 2009

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