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
nick"yo did you get that blondes number"
myles"nah but i banged that other chick i told you about"
pronounced like *mahh niggaa*