cool down
US /kuːl daʊn/
UK /kuːl daʊn/
1.
to become less hot, or to make something less hot
:
•
Let the soup cool down before you eat it.
•
The engine needs to cool down after a long drive.
2.
to become calmer or less excited
:
•
You need to cool down and think rationally.
•
After the argument, they both needed time to cool down.