Egg Shape

The normal egg has an oval shape with one end larger than the other, and it tapers toward the smaller end. These ends of an egg are commonly called the large end (air cell end) and the small end.
An egg shell that approximates the usual shape and that is of good even texture and strength and free from rough areas or thin spots. Slight ridges and rough areas that do not materially affect the shape, texture, and strength of the shell are permitted. - 196