slang for a rich, middle eastern prince or oil baron. Ususally strongly affiliated with U.S. oil companies.
'dang, the king of saudi arabia is such a goldnigger'
A Black man that marries a white woman for money or vice versa.
Rachel: He's just a black man marrying you for your money
Jacklyn: Ya I Know
Rachel: Well, he's just a Goldnigger