GABY
Ga"by, n. Etym: [Icel. gapi a rash, reckless man. Cf. Gafe.]
Defn: A simpleton; a dunce; a lout. [Colloq.]
GAD Gad, n. Etym: [OE. gad, Icel. gaddr goad, sting; akin to Sw. gadd sting, Goth. gazds, G. gerte switch. See Yard a measure.]
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.
GAD
Gad, v. i. [imp. & p. p. Gadded; p. pr. & vb. n. Gadding.] Etym:
[Prob. fr. gad, n., and orig. meaning to drive about.]