IPA: /ˈɪəˌfəʊn/
KK: /ˈɪrˌfoʊn/
A device used to listen to sound that fits in or over the ear, often connected to a phone or music player.
I always use my earphones when I go for a run to listen to music.
Earphone → It is formed from "ear" (from Old English "eare", meaning the organ of hearing) and "phone" (from Greek "phone", meaning sound or voice). The word "earphone" refers to a device that delivers sound directly to the ear.
Think of the 'ear' as the part of your body that hears, and 'phone' as relating to sound. This helps you remember that an earphone is a device that brings sound directly to your ear.