Top Definition
A high ranking person; well-known in the streets as a boss or leader. Tends to be a name given to a female who is always out at night with goons. Holds alot of respect among her peers and in her neighborhood. Rooted from the meaning of night meaning Nisha.
I didn't want to mess with her because she's Nishtorious.

Person: Good idea.
by MzVilla March 08, 2009
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