Meaning of unwind

un•wind

1. to undo or loosen from or as if from a coiled condition: to unwind a rolled bandage; to unwind a coiled rope.
2. to reduce the tension of; relax: to unwind a person with a drink.
3. to disentangle or disengage; untwist: to unwind one's legs from around the stool.

1. to become unwound.
2. to become relieved of tension; relax: After work we can have a drink and unwind.