vt. 抽去线, 解开...的线

Unthread \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.