Where does “𒌋” come from?

𒌋 (Akkadian) comes from Sumerian 𒌋, from Akkadian 𒀀 — water; heir.

Ancestry of “𒌋”, step by step

Step	Language	Word	Meaning
1	Sumerian	𒌋	breach, hole
2	Akkadian	𒀀	water; heir