Noun
resin (from trees)
Usually written using kana alone
歯医者で歯についたたばこのヤニを取ってもらうと、費用はどれくらいかかるでしょう？About how much does it cost to have a dentist remove cigarette tar from your teeth? (tobacco) tar; nicotine
Usually written using kana alone
sleep (in one's eyes); eye discharge
Usually written using kana alonesee 目やに
Also written 膠【やに】