Almost everybody has a different line on where they would consider Whiteness to end. For example, I've seen some people say Turks aren't White, or that Northern Africans (because of Roman occupation and colonization) are. I'm pretty sure Nazi Germany believed Slavs were not White. I'm interested to know where YOU draw the line, because there is rarely a consensus reached, and I rarely if ever see this asked.
Just please don't start a flamewar in the comments, I don't wanna come back to this post and see a bunch of arguing. Keep it respectable.
In America, it really means "Anglo-saxon" since German and Irish immigrants (the only other significant white population) wouldn't be considered white in the early 20th century.
Outside of America, it is a meaningless term, because people don't distinguish by skin color but by ethnicity.
I wish people would stop allowing our enemies to define us and go back to their ancestral roots and learn what made them great. There's a reason why your ancestors survived and colonized and thrived, and you need to learn that reason for yourself. It had very little to do with skin color, and everything to do with culture and religion, which you need to, at the very least, understand if not adopt for yourself.
Go do your family research, learn who your ancestors were.