eardrum
🇺🇸
/ˈɪrdrʌm/
🇬🇧
/ˈɪədrʌm/
A thin membrane inside the ear that vibrates when sound waves hit it, allowing us to hear.
The loud music caused his eardrum to vibrate intensely.
大声の音楽が彼の鼓膜を激しく振動させた。