TSUMUGU · TOCFL 2 (est.) · 字
思
思 ＝ 囟 ＋ 心
ㄙ · sī
verb — to think; to long for
字源 FORM — what the parts do
囟義the skull — the soft crown of the headcenturies of copying squared it into 田
The skull (囟) over the heart (心) — head and heart at the same work; together they write to think. Centuries of copying squared the skull into 田.
故事 STORY — a scene to remember it by
夜裡睡不著，腦（囟）裡轉的、心（心）裡掛的，是同一件事。
Sleepless at night — what turns in the skull (囟) and what hangs on the heart (心) is the same thing.
字源記憶法
意 · Meanings
(本義)思考、思索— to think常用
→思念— to long for — thought that stays
→意思— the meaning — what thinking arrives at
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
演 · Evolution
早期字形是囟在心上；楷書把囟寫方，成了田。
Early graphs write 囟, the fontanel, over the heart; the standard script squares it to 田.