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1.
A non-black male who is exclusively, and overwhelmingly attracted to black women.

Named for Robert De Niro, the brilliant actor, because of his large number of black girlfriends and black wives.
Girl 1: Did you see David today with Laqueshia?

Girl 2: No I saw him out last night with Ashanti.

Girl 1: He is such a deniro.
by thatgirl99 August 16, 2005
 
2.
n. money, cash, wonga, etc
I can't come out tonight, I have zero deniro
by Col Dog August 22, 2008
 
3.
Money
Can't go out tonight, got no deniro.
by NaylorUK September 27, 2008