The Collaborative International Dictionary of English v.0.48:

Gadding \Gad"ding\, a. & n.
   Going about much, needlessly or without purpose.
   [1913 Webster]

         Envy is a gadding passion, and walketh the streets.
                                                  --Bacon.
   [1913 Webster]

         The good nuns would check her gadding tongue.
                                                  --Tennyson.
   [1913 Webster]

   Gadding car, in quarrying, a car which carries a drilling
      machine so arranged as to drill a line of holes.
      [1913 Webster]