唾 means “saliva, spit”

つば · tsuba

Also: sputum

Kun'yomi (Japanese reading)
つば, つばき
On'yomi (Chinese reading)
ダ, タ

JLPT N1 · Taught in secondary school · 11 strokes

The story

A mouth (口) with something drooping (垂) from it: drool. 唾 is spit, 固唾をのむ is to hold your breath in suspense, and 眉唾, "spit on the eyebrows", said to be an old charm against being tricked by foxes, is a dubious story.

Used in 唾 (tsuba, saliva), 固唾をのむ (katazu o nomu, to hold one's breath), and 眉唾 (mayutsuba, dubious story)

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