What does the evil queen from Snow White says, "Fairest of them all"?

In Snow White the evil queen asks, who is the "fairest" of them all. What does she mean by "fairest"? I did some researching and it says by fair they meant "lightest" or whitest". But all this time I thought it meant most kindest, or most beautiful. Why do you think. I mean I would make sense for it to mean "whitest", because after all Snow White has skin as white as snow.
What does the evil queen from Snow White says, "Fairest of them all"?
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