[1] : The Collaborative International Dictionary of English v.0.48

gad \gad\, n. 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.
      1913 webster

   2. a pointed or wedge-shaped instrument of metal, as a steel
      wedge used in mining, etc.
      1913 webster

            i will go get a leaf of brass,
            and with a gad of steel will write these words.
                                                  --shak.
      1913 webster

   3. a sharp-pointed rod; a goad.
      1913 webster

   4. a spike on a gauntlet; a gadling. --fairholt.
      1913 webster

   5. a wedge-shaped billet of iron or steel. obs.
      1913 webster

            flemish steel . . . some in bars and some in gads.
                                                  --moxon.
      1913 webster

   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.
      1913 webster

   upon the gad, upon the spur of the moment; hastily. obs.
      "all this done upon the gad" --shak.
      1913 webster
see also:
yard upon the gad 

Gad >> G Words
Gad, definition of term: Gad
gad_pag1.html

Call Upon >> C Words
Call Upon, definition of term: Call Upon
call+upon_pag1.html

Bear Upon >> B Words
Bear Upon, definition of term: Bear Upon
bear+upon_pag1.html

Agreed Upon >> A Words
Agreed Upon, definition of term: Agreed Upon
agreed+upon_pag1.html