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1.
Spitting ill rhymes about someone, normally bashing them. When just going off, going wild, and maybe tearing someone to shreds verbally.

It comes from Nicki Minaj, an American female rapper and singer, and her sick on the verse.

Mainly because she is so dirty on the track.
Girl: Damn, did you see that bitch minajin' about Ashley?

Other Girl: Yeah, that shit was crazy, she tore her upp.
by Jayvin83 March 30, 2010
 
2.
Absolute chilling to he highest level.. like not caring or giving a damn about what anyone says.... like being without the blunt
yo what u doin'....
umm minajin' man
by Bigdog1199 February 23, 2010