unwind

fe’l verb

1. To separate (something that is wound up) Could you unwind about a foot of ribbon so I can finish the package?
2. To relax; to chill out; to rest and relieve of stress After work, I like to unwind by smoking a pipe while reading the paper.
3. To disentangle
4. To be or become unwound; to be capable of being unwound or untwisted.

ot noun

1. Any mechanism or operation that unwinds something.