Outer
尸 — the indexing radical, picturing a person seated or reclining. Anchors
居 in the meaning of dwelling: a body settled in a place. Same body-at-rest family as
屋 (house),
屁 (rear),
层 (layer),
屏 (screen). The hint character looked like
户 but the three strokes here are the seated-figure
尸.
