from The Century Dictionary and Cyclopedia
- Bald as an egg; completely bald.
Sorry, no etymologies found.
Perhaps egg-bald is what happens when you have all three genes for baldness-- and medium balding, like my dad, is what you get if you inherit one or two of the risk genes.
But if Kirk at any time of his life took a boy aside and there "quietly and naturally" rubbed the boy's face with his whiskers, I shall as easily believe that he sometimes varied the treatment by quietly and naturally standing on his venerable and egg-bald head.