earphone
US /ˈɪr.foʊn/
UK /ˈiə.fəʊn/
名詞
イヤホン
a piece of electronic equipment, usually one of a pair, that you put into or over your ear so that you can listen privately to the radio, recorded music, etc.:
例:
•
a pair/set of earphones (= these two objects and usually also the wire or piece that joins them)