顧 means “look back, regard”

こ · ko

Also: review, examine oneself, turn around

Kun'yomi (Japanese reading)
かえりみる
On'yomi (Chinese reading)
コ

JLPT N1 · Taught in secondary school · 21 strokes

The story

A head (頁) turned toward 雇, a bird (隹) at a door (戸): picture glancing back over your shoulder. 顧みる is to look back, 回顧 is looking back on the past, 顧客 a customer you keep looking after, and 顧問 an adviser.

Used in 顧客 (kokyaku, customer/client), 顧問 (komon, adviser), and 回顧 (kaiko, retrospection)

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