noun
a waxy substance produced by glands in the ear canal, also known as earwax
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The doctor used a specialized tool to remove impacted cerumen from the patient's ear.
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I heard that using cotton swabs can push cerumen further into your ear canal.
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My grandma always says to never stick anything smaller than your elbow in your ear to avoid cerumen buildup.
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The cerumen of ignorance blocked his ability to hear the truth.