Two Ladies Name
One of the Five Names used by the Pharaohs.
It is also known as the Nebty Name, after the Vulture Goddess of Upper Egypt, known as Nekhebet, and the Cobra Goddess of Lower Egypt, known as Buto.
This title seemed to indicate that the Two lands of Egypt were united in the Pharaohs.
See "Ancient Egypt - Its Culture and History" by White page 10.