Green’s Dictionary of Slang

nubian n.

[SE nubian, a member of a North African people living near what is now Egypt]

1. (US campus) a socially unacceptable person, used of whites and blacks despite obvious racist base.

[US]G. Underwood ‘Razorback Sl.’ in AS L:1/2 63: nubian n Person regarded as contemptible (white use).

2. (US gay) a black man.

[US]B. Rodgers Queens’ Vernacular.
[US]Maledicta IX 53: Nubian n [R] Black man; homosexual slang.