gad

gad is a Noun

Definition:

[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. Shak.

[3] A sharp-pointed rod; a goad.

[4] A spike on a gauntlet; a gadling. Fairholt.

[5] A wedge-shaped billet of iron or steel. [Obs.] Flemish steel . . . some in bars and some in gads. Moxon.

[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.] Halliwell. Bartlett. Upon the gad, upon the spur of the moment; hastily. [Obs.] "All this done upon the gad!" Shak.