桀
ケツ, ます, はりつけ

measuring box

JLPT0 G13 S0 F5000

Although 桀 appears to consist of 舛 crossing legs + 木 tree/wood, the phonetic evidence reveals it is actually 木 + a variant form of 舝. 舝 combines an abbreviated form of 牽 (drag/draw) + 韋 (circumambulate) → linchpin dragging on a wheel and hindering rotation (compare 轄). 桀 thus originally indicated the idea of pinning a victim to a raised, wooden construction. Later, 桀 came to refer to a *roost* as a different type of wooden construction raised high off the ground.

[Full Kanji Etymology List]