earphone, earpiece, headphone, phone - electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear; "it was not the typing but the earphones that she disliked"

headset - receiver consisting of a pair of headphones

phone, telephone, telephone set - electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds; "I talked to him on the telephone"