Meaning of “rest” - Learner’s Dictionary

rest

noun us uk /rest/
Britain is lagging far behind the rest of Europe on this issue.Take a copy for yourself and pass the rest around.The rest of the team complained that Sarah wasn't pulling her weight.He sets a good example to the rest of the class.She lived the rest of her life as an exile in the UK.
the rest

A2 the part of something that remains, or the others that remain:

I'm not sure I want to spend the rest of my life with him.
She was slightly older than the rest of us.
The rest were all found not guilty.

A2 [ C, U ] a period of time when you relax or sleep:

Why don't you have a rest?
I must get / some rest.
come to rest

to stop moving:

The car came to rest at the edge of the road.
→ See also put/set sb's mind at rest

(Definition of “rest noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)