1. A word widely used by black people who indulge in the hood culture. Means man, boy, or male, and dosen't have to be a black person. White people get confused all the time about, nigger and nigga which are entirely different words with different meanings.
That nigga George Bush is stupid.
That girl look like a nigga.
White dude: What up my nigga.
White guy: What up my nigga.
White dude: It feels so cool to call outsleves nigga.
White dude: I know, I wish i was black.