What is "napir"

Napir was the Elamite god of the moon. At least three Elamite kings bore this name in the god's honor, which is consistent with the fact that nearly all rulers of Elam bore theophoric names. One of them was Untash-Napirisha, who lived in the 13th century BC. Some sources suggest that the meaning of his name is "the shining one", but it is more likely that it is derived from the Elamite word 'nap or 'napir' meaning "God".