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« on: February 27, 2022, 08:28:11 am »
Theoretically it's a skin color. Practically it's whatever folks want it to mean at the moment; it's been a moving target since it was a meaningful term of use. Generally these days it's going to mean pale folks of european descent, without latin/jewish/roma/asian/etc. phenotype expression. Non-mexico north American and most of Europe demographic majorities, basically.
"Western" isn't a 100% overlap, but it's closest. European descent is largely necessary but not sufficient -- plenty of folks with European ancestry (often enough due to rape somewhere in the past, bleh) aren't considered white. Skin color only counts so much, lot of people largely pale skinned aren't considered white for one reason or another (stateside, see the "Hispanic white" demographic, who are generally white passing right until a xenophobe decides they aren't).
More or less, it's whatever the current majority of people that consider themselves white call white. If that sounds like an inconsistent or confusing heuristic, well. Yes. Yes, it is. Race is pretty close to entirely a social construct (genetics do not give a damn about what we call white or black or whatever people, they a shitton messier), without much care about things like consistency or sense, ha, so you can't really expect consistency or sense.