headphones
n. C / Un. a piece of equipment that you wear over your ears so you can listen to music or sounds without other people hearing.
n. a pair of small speakers worn over or in the ears, connected by a band or wire, used for private listening to audio signals.
I always wear headphones when I listen to music on the bus.
She put on her noise-canceling headphones to block out the sound of the airplane engine during the long flight.
High-fidelity headphones allow audiophiles to perceive subtle nuances in a recording that might be lost when played through standard external speakers.
From head + phones.
Usually used in the plural; when referring to a single unit, it is often called 'a pair of headphones'.
I bought a new headphoneI bought some new headphonesLike 'glasses' or 'scissors', this word is typically plural even when referring to one item.