v. t. [ 1st un- + lace. ] [ 1913 Webster ]

1. To loose by undoing a lacing; as, to unlace a shoe. [ 1913 Webster ]

2. To loose the dress of; to undress; hence, to expose; to disgrace. [ 1913 Webster ]

What's the matter,
That you unlace your reputation thus? Shak. [ 1913 Webster ]

3. (Naut.) To loose, and take off, as a bonnet from a sail, or to cast off, as any lacing in any part of the rigging of a vessel. Totten. [ 1913 Webster ]