What does km sign mean in Ancient Egyptian language?

 

 

 

Representing crocodile skin with spines, the “km” sign was vastly popular.

 

Although it meant 'black' alluding to the land's rich black silt, its most significant use was in the word 'kmt' meaning “Egypt” in ancient Egyptian.

 

‎‏Ancient Egyptian language was also called "Ra-n-kmt" meaning "the tongue of Egypt" and the Egyptians were called "Ramth-n-kmt", which means "the people of Egypt”.