丙 means “third (in a series), C”

へい · hei

Also: third class, 3rd, 3rd calendar sign

Kun'yomi (Japanese reading)
ひのえ
On'yomi (Chinese reading)
ヘイ

JLPT N1 · Taught in secondary school · 5 strokes

The story

A bar (一) over a frame (冂) with 人 inside: the third of the ten heavenly stems. 甲乙丙 run like A, B, C, and 丙午, the fire-horse year, was so feared that births in Japan dropped sharply in 1966.

Used in 甲乙丙 (kouotsuhei, A, B and C/first, second and third), 丙午 (hinoeuma, fire-horse year), and 丙種 (heishu, class C)

More from Old Measures

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.