保 means “keep, protect, preserve”

ほ · ho

Also: guarantee

Kun'yomi (Japanese reading)
たもつ
On'yomi (Chinese reading)
ホ, ホウ

JLPT N1 · Taught in grade 5 · 9 strokes

The story

A person (亻) beside a mouth (口) over a tree (木), though the oldest forms show an adult with a child strapped to their back: keeping someone safe. 保存 is saving a file, 保険 is insurance, and 保育園 is the daycare where toddlers spend the day.

Used in 保存 (hozon, saving/preservation), 保険 (hoken, insurance), and 保つ (tamotsu, to keep/maintain)

More from Help & Protect

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