听筒 Traditional form: 聽筒 Pinyin (reading): tīngtǒng Definitions: telephone receiver headphone earphone earpiece stethoscope Characters: 听 - to hear, to listen; to understand; to obey 筒 - tube, pipe, cylinder; a thick piece of bamboo Traditional characters: 聽 - to hear, to listen; to understand; to obey 筒 - tube, pipe, cylinder; a thick piece of bamboo