To become untied or loosed.
In the Perl programming language, to undo the process of tying, so that a variable uses default instead of custom functionality.
To resolve; to unfold; to clear.
To loosen, as something interlaced or knotted; to disengage the parts of.
To free from fastening or from restraint; to let loose; to unbind.
To become untwisted or disentangled.
To free (one thing that is entwined with another), disentangle, extricate.
To untwist the strands of (something entwined).