wind down

verb5

1. •
   To lower by winding, as with a crank or windlass.

   • Wind down the car window if you want to talk to me.
2. •
   To shut down slowly (by degrees or in phases).

   • A program as complex as the Space Shuttle program takes some time to wind down.
3. •
   To slow, as if coming to an end; to become calmer or less busy.

   • The festival seems to be winding down now.
4. •
   To relax; to get rid of stress; to destress.

   • After a long day at work, she winds down by kickboxing.
5. •
   To unwind.

   • You'd better wind down that wind-up toy before you take it apart, or pieces might go flying.