also: じこう
noun, noun which may take the genitive case particle 'no'
Common word for earwax; the medical term 'cerumen' is a direct equivalent.
耳垢がたまると耳が聞こえにくくなることがある。
When earwax builds up, it can sometimes make it hard to hear.
耳鼻科で耳垢を取ってもらった。
I had earwax removed at the ENT clinic.