earplug

noun ear·plug \-ˌpləg\

: a piece of soft material that you put in your ear to keep out water, noise, etc.

Full Definition of EARPLUG

: an ornament inserted in the lobe of the ear especially to distend it

: a device of pliable material for insertion into the outer opening of the ear (as to keep out water or deaden sound)

See earplug defined for English-language learners

1904

Medical Dictionary

noun ear·plug \-ˌpləg\

: a device of pliable material for insertion into the outer opening of the ear (as to keep out water or deaden sound)

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