entries → 窗
TSUMUGU · TOCFL 1 (est.) · 字
窗 character · TOCFL 1 (est.)
窗 ＝ 穴 ＋ 囪
ㄔㄨㄤ · chuāng
noun — a window

字源 FORM — what the parts do

穴義a cave, an openingthe opening cut into the wall, on top
囪形the old window pictograph — a latticed openingrendered bare; now stylized in the middle, the original skylight graph
An opening (穴) with a latticed window (囪) set in it — light and air let through the wall. 囪 was once a standalone picture of a roof-window or chimney; folded under 穴 here, its lattice is now a stylized core most readers no longer see as a window. From the cut opening: a window (窗戶、窗子).

故事 STORY — a scene to remember it by

牆上鑿開一個口（穴），嵌進一扇格子窗（囪）——光就進來了。
A hole cut in the wall (穴), a latticed window (囪) fitted in — and the light comes through.
字源記憶法
意 · Meanings
(本義)窗、窗牖— an opening for light and air
→窗戶、窗子— a window常用
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
囪cōngthe inner pictograph, standing alone — the old skylight; 窗 sets it under the opening 穴門ménthe wall's other opening — a door you pass through, where 窗 only lets light in