Definition of "earphone" [earphone]

• A device that converts electric signals, as from a telephone, stereo, or radio receiver, to audible sound and fits over or in the ear. Also called earpiece. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The time has come for men and women of good will to begin playing an exciting new game called earphone keggling."
• "Earphone technology and alien cyborg designs come together in the Sensaphonics 3MAX triple-driver custom earphone, which is being touted as the only triple-driver earphone with the long-wearing comfort of soft-gel silicone earpieces."
• "Be aware, though, that this kind of earphone makes noise itself: whenever you're walking, or even just touching the cord, you may hear an unwelcome addition to your music - because of the earplug effect."