From Sumerian 饞倣 (e) meaning "temple, house" and 饞姽 (shar) meaning "totality, world". This was the name of the main temple dedicated to the god Ashur in the city of Ashur.

the etymology and history of place names
At this point this site's collection is small and somewhat uneven. If you know the meaning of a place name that is not here, you are encouraged to submit it.