sleep-in
nounUK /ˈsliːp ɪn/
US /ˈsliːp ɪn/
A sleep-in is when you stay in bed later than usual in the morning.
Saturday is my favorite day because I get a sleep-in.
OTHER MEANINGS
2. A person who lives at the place where they work, like a maid or nanny.
The family hired a sleep-in nanny to help with the children.
3. A protest where people stay in a place overnight.
The students held a sleep-in at the library to ask for longer opening hours.
4. Describing a job where you stay overnight at your workplace.
She took a sleep-in shift at the care home.