Answer: unlink

AnswerCrossword Clue
UNLINKDetach, as from a chain
UNLINKSeparate, as chain parts
UNLINKDisconnect
UNLINKDetach
UNLINKSeparate.
UNLINKDo a paper clip job
unlinkMake no longer connected
unlinkto unfasten the connecting devices
unlinkUnconnected