gad

n.

  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.
  3. A sharp-pointed rod; a goad.
  4. A spike on a gauntlet; a gadling.
  5. A wedge-shaped billet of iron or steel.
  6. A rod or stick, as a fishing rod, a measuring rod, or a rod used to drive cattle with.
  7. To walk about; to rove or go about, without purpose; hence, to run wild; to be uncontrolled.