earphone

n. small sound receiver which is placed in or over the ear (for a radio or telephone)

Headphones (also known as earphones, earbuds, stereophones, headsets, or by the slang term cans) are a pair of tiny loudspeakers, or less commonly a single speaker, with a way of holding them close to a user's ears and a means of connecting them to a stereophonic or monophonic, or binaural audio-frequency signal source such as an audio amplifier, radio, etc. In the context of telecommunication, the term headset is used to describe a combination of headphone and microphone used for two-way communication, for example with a telephone.
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Noun
1. 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"
(synonym) earpiece, headphone, phone
(hypernym) electro-acoustic transducer
(hyponym) telephone receiver, receiver

Synonyms and related words:
acoustical network, capacitor speaker, coaxial speaker, cone, crossover network, diaphragm, dynamic speaker, electrodynamic speaker, electromagnetic speaker, electrostatic speaker, excited-field speaker, full-fidelity speaker, headphone, headset, high-fidelity speaker, high-frequency speaker, horn, loudspeaker, low-frequency speaker, midrange speaker, monorange speaker, moving-coil speaker, permanent magnet speaker, speaker, speaker system, speaker unit, triaxial speaker, tweeter, voice coil, woofer,
  

earphone
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