noun
a membrane in the ear that vibrates in response to sound waves, transmitting the sound to the middle ear
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The doctor explained that the loud noise had caused damage to her eardrum.
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I heard the music so loudly that I think my eardrums might burst!
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That concert was so loud, I thought my eardrums were going to explode!
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The news of his betrayal hit her like a sharp blow to the eardrum.