The Collaborative International Dictionary of English v.0.48:

Gad \Gad\, v. i. [imp. & p. p. Gadded; p. pr. & vb. n.
   Gadding.] [Prob. fr. gad, n., and orig. meaning to drive
   about.]
   To walk about; to rove or go about, without purpose; hence,
   to run wild; to be uncontrolled. "The gadding vine."
   --Milton.
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         Why gaddest thou about so much to change thy way?
                                                  --Jer. ii. 36.
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The Collaborative International Dictionary of English v.0.48:

Gadding \Gad"ding\, a. & n.
   Going about much, needlessly or without purpose.
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         Envy is a gadding passion, and walketh the streets.
                                                  --Bacon.
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         The good nuns would check her gadding tongue.
                                                  --Tennyson.
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   Gadding car, in quarrying, a car which carries a drilling
      machine so arranged as to drill a line of holes.
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