The Collaborative International Dictionary of English v.0.48:

Gadling \Gad"ling\, a. [See Gad, v. i.]
   Gadding about. [Obs.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Gadling \Gad"ling\, n.
   A roving vagabond. [Obs.] --Rom. of R.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Gadling \Gad"ling\, n. [Gad, n. + -ling.] (Medi[ae]val Armor)
   [R.]
   See Gad, n., 4.
   [1913 Webster]