unthread

verb (used with object)

1. to draw out or take out the thread from: to unthread a sewing machine.
2. to thread one’s way through or out of, as a densely wooded forest.
3. to disentangle; separate out of a raveled or confused condition: to unthread a mystery.

verb (tr)

1. to draw out the thread or threads from (a needle, etc)
2. to disentangle