耳みみ栓せんみみせんMeanings1nounearplugUsed for earplugs that protect against noise or water, such as while swimming or sleeping.飛ひ行こう機きの中なかで耳みみ栓せんをした。I put in earplugs on the plane.水すい泳えいのときに耳みみ栓せんを使つかう。I use earplugs when swimming.