vt. 解开...的套具, 放松

[ verb ]
unfasten or release from or as if from a hitch
<verb.contact>

unhitch \un*hitch"\, v. t. [1st pref. un- + hitch.]
To free from being hitched, or as if from being hitched; to
unfasten; to loose; as, to unhitch a horse, or a trace.