headphone

noun

1. (form-of, plural-normally, singular)singular of headphones: a cushioned speaker placed on, over, or inside the ear, normally used in left and right pairs.

   “Some joggers wear only one headphone in their ears, to enjoy music while paying attention to their environment.”

   “From "Little" Louie Vega, David Camacho, and Tyrone Francis I learned about seamless beatmixing, using a so-called lollipop headphone for one ear and a monitor speaker for the other.”

2. (attributive)Used with headphones.

   “headphone plug”

   “headphone socket”