noun ダウンロード 🔗共有 耳垢(みみあか) A waxy substance secreted by the ear. Examples : "My little sister often has a buildup of earwax, requiring her to visit the doctor. " 妹はよく耳垢が溜まり、医者に行く必要があります。 physiology substance anatomy body organ AIとチャット語彙ゲーム読解練習