Some Shivlings are in the shape of an egg especially the
Banalinga. God as per Hindu concept is formless and That can only be
represented symbolically. Shivling in the shape of egg is one such form. Here is a look at the symbolism and meaning of Shivling in the shape of egg.
Symbolically the egg-shaped Shivling represents the
universe. It is divided into two halves sky and earth.
The Shivling shaped like an egg represents the ‘Brahmanda' - the ever expanding cosmos.
It also explains that the creator and the creation are one and the same.
Shivling represents known and unknown cosmos and the cosmos, in turn, being represented as a cosmic egg in Hindu scriptures. Again an egg is an ellipsoid depicting with no beginning, nor end.