Dear "Big Black Dude", Caucasian, as in, from the Caucasus mountains, turkey-esque places... I hope you aren't referring to white people, or you aren't keeping your ignorance to the confines of your own apartment. I like the humor though, and the point.
Caucasian is the name of a certain distinct of humans with the main characteristic of a whiter skin with eye colors varying from brown, grey , blue depending the region the respected offspring live. So next timle if you wan't to sound smart, don't go full retard.
that's the attempted meaning it has today, but for actual definition its, as I said, from the Caucasus mountains, word mean specific things, not what someone wasnts them to in attempts to look pc, next time if you wanna call somebody on something.....