TSUMUGU · TOCFL B2 (est.) · 字
寢
寢 ＝ 宀 ＋ 㑴
ㄑㄧㄣˇ · qǐn
verb — to sleep, lie down to rest; noun — sleeping chamber
字源 FORM — what the parts do
宀義a roof — the indoor chamber
㑴聲qīn — gives the sounda person beside a broom (帚) sweeping the bedchamber; written 侵 on the right today
Tqīn → qǐn — the tone tips
Under a roof (宀), the sleeping chamber, and inside it a broom (帚) — the swept bedroom. The old graph carries two tellings of the right element: 㑴 qīn lending the sound, the tone tipped to qǐn; or the whole written straight as meaning — a hand sweeping out the room you sleep in. From the chamber, the act done there: to lie down, to sleep — 就寢、寢室.
故事 STORY — a scene to remember it by
屋頂（宀）下掃淨的內室，帚靠在牆角——躺下就寢。
The swept inner room under the roof (宀), the broom in the corner — you lie down to sleep.
字源記憶法
意 · Meanings
(本義)就寢、寢室— to sleep; the sleeping chamber常用
→臥室、寢具— bedroom; bedding
⇒寢食難安— rest itself — sleep and ease
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
寐mèithe lookalike — 寐 puts 未 under the roof for dreaming sleep, 寢 keeps the broom-swept chamber侵qīnthe phonetic standing alone — to encroach, the broom-hand advancing