gate, door, living quarters
闈 centers on an entrance or passageway: a gate or door, and by extension the living quarters accessed through it.
闈 combines 門 (gate) with 韋, which likely contributes sound. The character originally referred to a small gate or side door, later extending to the living quarters within.
The gate 門 encloses 韋, like a private entrance leading to living quarters. Picture a small side door marked with a leather 韋 curtain.
For イ, imagine an easy gate that swings open with a soft 'ee' sound: easy -> イ, and the gate leads to living quarters.
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