Pronunciation: (un-lOOs'), [key]
—v.t., -loosed, -loos•ing.
1. to loosen or relax (the grasp, hold, fingers, etc.).
2. to let loose or set free; free from restraint.
3. to undo or untie (a fastening, knot, etc.); unfasten.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.