某 means “a certain, so-and-so”

ぼう · bou

Also: one, that person

Kun'yomi (Japanese reading)
それがし, なにがし
On'yomi (Chinese reading)
ボウ

JLPT N1 · Taught in secondary school · 9 strokes

The story

Sweet (甘) over a tree (木): the Shuowen says 某 once named a sour fruit, before it was borrowed for 'a certain'. 某氏 is Mr. So-and-so, and celebrities post photos from 都内某所, 'somewhere in Tokyo', to keep the place a secret.

Used in 某所 (bousho, a certain place), 某氏 (boushi, a certain person), and 某国 (boukoku, a certain country)

More from Who's Who

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