Un*thread" (?), v. t. [1st pref. un- + thread.]
1.
To draw or take out a thread from; as, to unthread a needle.
2.
To deprive of ligaments; to loose the ligaments of.
He with his bare wand can unthread thy joints.
Milton.
3.
To make one's way through; to traverse; as, to unthread a devious path.
De Quincey.
© Webster 1913.