Meaning of “earplug” in the English Dictionary

british dictionary

"earplug" in British English

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earplugnoun [ C usually plural ]

uk /ˈɪə.plʌɡ/ us /ˈɪr.plʌɡ/

a small piece of soft material, such as wax, cotton, or plastic, that you put into your ear to keep out noise or water

(Definition of “earplug” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)