Where does “*ʾeggārā” come from?

*ʾeggārā (Imperial Aramaic) comes from Akkadian igārum, from Akkadian 𒂍𒋞, from Sumerian ?? — wall.

Ancestry of “*ʾeggārā”, step by step

Step	Language	Word	Meaning
1	Akkadian	igārum	wall
2	Akkadian	𒂍𒋞	wall
3	Sumerian	??	wall

Words derived from “*ʾeggārā”

ܐܓܪܐ

Every word from Sumerian ?? →Every word from Akkadian 𒂍𒋞 →Every word from Akkadian igārum →