Or for Nor
Probably our most nearly universal solecism. "I cannot see the sun or the moon." This means that I am unable to see one of them, though I may see the other. By using nor, I affirm the invisibility of both, which is what I wanted to do. If a man is not white or black he may nevertheless be a Negro or a Caucasian; but if he is not white nor black he belongs to some other race. See Neither.