IPA: /ˈbækˌrɛst/
KK: /ˈbækˌrɛst/
A support or cushion for the back, often found on chairs or seats to provide comfort.
The chair has a comfortable backrest that helps support my back while I work.
Backrest → It is formed from "back" (from Old English "bæce", meaning the rear part of the body) and "rest" (from Old French "rester", meaning to remain or stay). The word "backrest" refers to a support for the back, allowing it to remain in a comfortable position.
Think of the 'back' as the rear part of your body needing a 'rest' — that's why a backrest supports your back.