Gad /(?)/

1. The point of a spear, or an arrowhead.
2. A pointed or wedge-shaped instrument of metal, as a steel wedge used in mining, etc.

   I will go get a leaf of brass, And with a gad of steel will write these words.

3. A sharp-pointed rod; a goad.
4. A spike on a gauntlet; a gadling.
5. A wedge-shaped billet of iron or steel. [Obs.]

   Flemish steel . . . some in bars and some in gads.

6. A rod or stick, as a fishing rod, a measuring rod, or a rod used to drive cattle with. [Prov. Eng. Local, U.S.]

imp. & p. p. Gadded; p. pr. & vb. n. Gadding

1. To walk about; to rove or go about, without purpose; hence, to run wild; to be uncontrolled.

   Why gaddest thou about so much to change thy way?