nasal mucus; runny nose; snot
Refers to liquid mucus from the nose, especially when it drips or runs. 'Snot' is a casual/vulgar equivalent; use with care.
風邪で鼻水が止まらない。
My nose won't stop running because of a cold.
ティッシュで鼻水を拭いた。
I wiped my runny nose with a tissue.
When you catch a cold, your nose runs.
The child is playing with snot dripping from his nose.
My nose won't stop running because of hay fever.
I wiped my nose with a tissue.
Mixed kana-kanji spelling; occasionally seen but less common than 鼻水.