noun a sharp-pointed rod; a goad.
2. gad ·noun a spike on a gauntlet; a gadling.
3. gad ·noun a wedge-shaped billet of iron or steel.
4. gad ·noun the point of a spear, or an arrowhead.
5. gad ·noun a pointed or wedge-shaped instrument of metal, as a steel wedge used in mining, ·etc.
6. gad ·noun a rod or stick, as a fishing rod, a measuring rod, or a rod used to drive cattle with.
7. gad ·noun to walk about; to rove or go about, without purpose; hence, to run wild; to be uncontrolled.