headphonen. 戴在頭上的收話器、耳機頭載數話器學術名詞頭戴式耳機：造船工程、機械工程頭戴耳機：電機工程、電力工程耳機：圖書館學與資訊科學、資訊英文釋義electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear