IPA: /ˈɪəʃɒt/
KK: /ˈɪrˌʃɑt/
The distance within which a person can hear sounds or voices without any special equipment.
She spoke softly, knowing he was just out of earshot.
Earshot → The word is formed from "ear" (from Old English "eare", meaning the organ of hearing) and "shot" (from Old English "sceot", meaning a distance or range). The term "earshot" refers to the distance within which a person can hear something, literally meaning the range of hearing.
Think of the 'ear' as the organ that hears and 'shot' as a distance — so earshot means the distance within which you can hear.