Headphone
/hˈɛˌdfoʊn/
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Definition
(noun) singular of headphones: a cushioned speaker placed on, over, or inside the ear, normally used in left and right pairs.
Sentence Examples
Put the headphone on.
Apple's new iPhone doesn't have a headphone jack.
CEFR Practice Quiz
I always wear a ____ when I am traveling on the bus so I can listen to my music.