Brown Driver Briggs

 1. to start up, tremble, shake, spring up
  1) (Qal) to start up
  2) (Piel) to leap
  3) (Hiphil) to cause to start up
2. to loose, let loose, undo, be free, be loose
  1) (Hiphil)
2a1. to unfasten, loosen
2a2. to set free, unbind