headphone
n. countablen. a piece of equipment that you wear over or in your ears to listen to music or audio without other people hearing. You usually use them with a phone or computer.
n. an electroacoustic transducer worn on or over the head to convert electrical signals to audible sound for a single user. Often used in the plural form to refer to a single pair of speakers.
I put on my headphone to listen to the podcast.
She adjusted her left headphone because the sound was cutting out during the video call.
While high-fidelity audio enthusiasts often prefer an open-back headphone for its superior soundstage, the average commuter prioritises noise cancellation and portability for daily use in crowded environments.
Commonly used in the plural ('headphones') to refer to the device as a whole, similar to 'glasses' or 'scissors'.
I bought a new headphoneI bought a new pair of headphonesEnglish speakers usually treat this as a plural object; use 'a pair of' or the plural form 'headphones' when referring to the device.