1.
When someone settles down, they start living a quiet life in one place, especially when they get married or buy a house.
One day I’ll want to ~ and have a family...
Before she settled down in Portugal, she had run her own antiques shop in London.
PHRASAL VERB: V P, V P prep/adv
2.
If a situation or a person that has been going through a lot of problems or changes settles down, they become calm.
It’d be fun, after the situation in Europe settles down, to take a trip over to France...
PHRASAL VERB: V P
3.
If you ~ to do something or to something, you prepare to do it and concentrate on it.
He got his coffee, came back and settled down to listen...
They settled down to some serious work.
PHRASAL VERB: V P to-inf, V P to n
4.
If you ~ for the night, you get ready to lie down and sleep.
They put up their tents and settled down for the night.
PHRASAL VERB: V P