Answer: earplug

AnswerCrossword Clue
EARPLUGDin deadener
earplugA piece of wax, rubber, or cotton placed in the ear as protection against noise or water
earplugAn ornament worn in the lobe of the ear
earpluga plug for the ear
EARPLUGSleep aid
EARPLUGSound barrier
EARPLUGNoise blocker-outer
EARPLUGSilencer?
EARPLUGSilencer of a sort
EARPLUGSwimmer's stopper
EARPLUGSwimmer's protection
EARPLUGRadio addendum.
EARPLUGSleeping aid
EARPLUGNoise reducer
EARPLUGStick it in your auditory canal
EARPLUGSound stopper
EARPLUGOne of a swimmer's pair
EARPLUGNoise blocker