greenish nasal mucus; green snot
Colloquial term for thick, greenish nasal discharge, often associated with a cold or sinus infection. Compare 青っぱな, which is more emphatic or childish.
See also: 青っぱな
I have a cold and green snot is coming out.
ティッシュで青洟をかんだ。
I blew my green snot with a tissue.
Standard kanji spelling using 洟 (nasal mucus).
Mixed kanji-kana spelling, common when the kanji 洟 is considered difficult.
Irregular kanji usage; 鼻 normally means 'nose', but here it stands for nasal mucus.
Compound of 青 (ao, 'blue/green') and 洟 (hana, 'nasal mucus'). The reading hana becomes bana due to rendaku.