noun. undefined

noun. A part, as of a telephone receiver or hearing aid, that fits in or is held next to the ear.

noun. An earphone, especially when not part of a pair.

noun. Either of the two parts of an eyeglasses frame that extend over or around the ear.

noun. A name given to the side-piece of the burganet or open helmet of the sixteenth century, usually made of splints, and covering a leather strap or chin-band to which they are riveted. Compare cheek-piece. Also called oreillère.

noun. a device for converting electric signals into sounds, designed to be held over or inserted into the ear.

noun. A speaker placed inside or held near to the ear.

noun. The arm on a pair of glasses that hooks over the ear to hold them in place.

noun. electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear

"UPDATE: The main article I link to below has been pulled, so we should assume that the author's allegation, that Romney's staff admits he wears an earpiece, is no longer proven."

electro-acoustic transducer  

earplug  receiver  telephone receiver  

Bluetooth  adapters  adaptor  bourne  central-station  

earphone  headphone  phone