IPA: /ˈbɛdˌrɛst/
KK: /bɛdˌrɛst/
A period of time when a person must stay in bed to help them get better from an illness or injury.
After her surgery, the doctor recommended a week of bedrest to ensure a full recovery.
Bedrest → It is formed from "bed" (from Old English *bedd*, meaning a sleeping place) and "rest" (from Old French *rest*, meaning to cease work or activity). The term "bedrest" refers to a period of rest while lying in bed, typically for health reasons.
Think of a 'sleeping place' ('bed') where you 'cease activity' ('rest') — that's what bedrest means.