Available Definitions:
1) v. t. - To loosen, as something interlaced or knotted; to disengage the parts of; as, to untie a knot.
2) v. t. - To free from fastening or from restraint; to let loose; to unbind.
3) v. t. - To resolve; to unfold; to clear.
4) v. i. - To become untied or loosed.