white man n.
1. [mid-19C+] (UK/US, also white fellow, ...guy) an honourable person.
2. [1950s] (W.I.) an albino.
SE in slang uses
[1940s–50s] work; the matter in hand.
[mid–late 19C] (US) a fair chance.
[1980s+] (US black) the relative inability of Caucasians to jump, a term of derision almost exclusively used in a basketball context.