TSUMUGU · B2 (est.) · 字
丁
ㄉㄧㄥ · dīng
noun — a nail; an adult male; the fourth heavenly stem
字源 FORM — what the parts do
丁形the head and shaft of a nail, seen from the side
The cap and shaft of a nail seen side-on — a single spike. The picture stayed productive as a sound: 釘 the metal nail, 訂 to fix in place, 頂 the top, 盯 to fix the eyes. Loaned away for the fourth heavenly stem, and for a grown man — 壯丁, 人丁.
故事 STORY — a scene to remember it by
一根釘子（丁）側看過去——上頭一橫是釘帽，底下一豎是釘身。
A nail (丁) seen from the side — the cross-stroke its head, the down-stroke its shaft.
字源記憶法
意 · Meanings
(本義)釘子— a nail
→壯丁、人丁— an adult male; head count常用
⇒天干第四、丁點— the fourth stem; a tiny bit
(本義) original meaning · → ⇒ each arrow = one more step of extension