TSUMUGU · TOCFL 1 · 字
樓
樓 ＝ 木 ＋ 婁
ㄌㄡˊ · lóu
noun — a storeyed building; a floor
字源 FORM — what the parts do
婁聲lóu — gives the sound, exact
Timber (木) built upward — 說文: the stacked house, a roof above a roof. 婁 lóu gives the sound exactly. Every level keeps the name: 二樓、三樓、大樓.
故事 STORY — a scene to remember it by
木（木）柱上再立木柱，窗子疊著窗子，往上數：二樓、三樓。
Timber (木) post on timber post, windows stacked on windows — counting upward: second floor, third.
字源記憶法
意 · Meanings
(本義)重屋— the storeyed house
→大樓、樓房— a building常用
→二樓、樓上— a floor; upstairs常用
(本義) original meaning · → ⇒ each arrow = one more step of extension