from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A receiver, as for a telephone, radio, or stereo, held to the ear by a headband.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A listening device placed or worn in the ear, usually sold in pairs
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear
head + phone (Wiktionary)