吸 means “inhale, suck, absorb”

すう · suu

Also: imbibe, sip

Kun'yomi (Japanese reading)
すう
On'yomi (Chinese reading)
キュウ

JLPT N3 · Taught in grade 6 · 6 strokes

The story

A mouth (口) reaching out (及) to draw something in. 吸う covers breathing in, sipping through a straw and smoking, and 呼吸 pairs the breath out (呼) with the breath in: breathing.

Used in 吸う (suu, to inhale/suck), 呼吸 (kokyuu, breathing), and 吸収 (kyuushuu, absorption)

More from Life & Breath

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