noun Usually, headphones.
Audio. a headset designed for use with a stereo system.
any set of earphones.

1910–15; head + -phone

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Encyclopedia Britannica


small loudspeaker (earphone) held over the ear by a band or wire worn on the head. Headphones are commonly employed in situations in which levels of surrounding noise are high, as in an airplane cockpit, or where a user such as a switchboard operator needs to keep the hands free, or where the listener is moving about or wants to listen without disturbing other people. A headphone may be equipped with one earphone or two and may include a miniature microphone, in which case it is called a headset. For listening to stereophonically reproduced sound, stereo headphones may be used, with separate channels of sound being fed to the two earphones.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Monster, the maker of home theater cable, has several high-end headphone models
  designed to better reproduce digital music.
Verify that your system audio works by playing another audio application and/or
  checking your speaker and headphone wires.
Each theater has a dozen leather chairs with headphone jacks and monitor
Each seat has a power outlet and a headphone jack and many riders do business
  as they travel the country.
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