繭 means “cocoon”

まゆ · mayu

Kun'yomi (Japanese reading)
まゆ, きぬ
On'yomi (Chinese reading)
ケン

JLPT N1 · Taught in secondary school · 18 strokes

The story

Under grass (艹), inside a wrapping (冂), a thread (糸) and an insect (虫): a silkworm sealed in its own silk. 繭 is a cocoon, boiled so its single long thread can be unwound, and 繭玉 are cocoon-shaped New Year ornaments hung on branches.

Used in 繭 (mayu, cocoon) and 繭玉 (mayudama, cocoon-shaped New Year ornament)

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