It means it's fresh, dang it!

The white, or albumen, of a very fresh egg contains dissolved carbon dioxide, which gives it a cloudy appearance. Some eggs have more; some less. As the egg ages, the carbon dioxide escapes, so that the white becomes more transparent.

A transparent white does not indicate a problem, as an egg that has been stored in the refrigerator is almost certain to be fresh for three to five weeks after it has been packed. It is just not as fresh as an egg that has a cloudy white.