普 means “ordinary, universal”

ふ · fu

Also: wide(ly), generally, Prussia

Kun'yomi (Japanese reading)
あまねく, あまねし
On'yomi (Chinese reading)
フ

JLPT N2 · Taught in secondary school · 12 strokes

The story

Picture the sun (日) shining on a row of people standing side by side (並), lighting each one alike. 普 is general and ordinary: 普通 is normal, 普段 is your everyday, and a 普通 train stops at every station on the line.

Used in 普通 (futsuu, normal/ordinary), 普段 (fudan, usually/everyday), and 普及 (fukyuu, spread/becoming widespread)

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