A person (typically male, can be black but not always) that is deserving of high regard and/or fear in some way, due to accomplishment, reputation, specialized skills, or a combination of everything stated. When spoken of, noticeable emphasis in the sentence is usually on the word 'that' when used to describe 'that nigga.'
If you want to get something done, you can go to anybody. But if you want it done right, I'm that nigga.

Oh shit, the one with the 22 inch chrome on the caddy? He's THAT nigga?

"Alligator seats with the head in the inside
Swine on the dash, G-wagon is So Fly
Number one don't tangle and twist it
When it come to these cars I am that nigga"
-Birdman, "Still Fly"
by Krinkov Gangsta April 25, 2016
Get the that nigga mug.
Plural form of the word “nigga

To be used when referring to 2 or more niggae at the same time
Jamal: yo what’s up my niggae?
Kevin and Bon Qui-Qui: ay whats up
by Original Niggae January 27, 2021
Get the niggae mug.
Someone who ain't ya nigga.

A wannabe that aint nobody.
Look at that no nigga!
by lil cc November 5, 2006
Get the no nigga mug.
Used in place of "I", "me", or "my". A synonym of "a playa". I would advise against referring to yourself in this way if you're a person of the pasty persuasion.
by Nick D January 20, 2004
Get the a nigga mug.
A term for a Black person which people of all races still take great offence to. It is often used by black people instead of words like "homie" or "home dawg" in ebonics.

While it was used as an offensivve and derogatory term, it actually origins from the spanish/portugese: "Negro", which in turn gets its routes from the LATIN: NIGER, meaning black.

DO NOT USE THIS TERM IN PUBLIC. You will probably be arrested for racial offences, or have your head kicked in.
Black man to Black man:

"Sup Nigga?"

"sup ma Homie? how've you been?"

White Man to Black man:

"Sup nigga?"

*SMACK*

Either black/white close friends:
"Hey nigga!"
"ahhh...my white cracka"
by Biscuitz September 19, 2011
Get the Nigga mug.
A common form of address between two or more black (occasionally mixed race) people. White people don't understand why the black community should be able to reclaim a word once used to belittle them.
by Doc_B April 14, 2015
Get the Nigga mug.