耳塞 Traditional form: 耳塞 Pinyin (reading): ěrsāi Definitions: earplug earphone Characters: 耳 - ear; to hear, to hear of; handle 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress Traditional characters: 耳 - ear; to hear, to hear of; handle 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress