ma nigga:
its a name you give someone that your homies with
also you use it when your proud, or happy about something

Its like saying my man, but more gangster and cool,

Another definition; saying "ma nigga" is like saying yee motherfucka, your the man/bawss

stands for "my nigger" usually two or more black people would say it to each other, when they hang out or meet somewhere

('mah' 'neegah') Slang salutation deriving from 'my negro' which has been bastardized into this current form. Generally used among friends although mispronunciation of the final syllable can result in immediate assault. White people should use with caution.

words used by black people to symbol their friends