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gad 1

intr.v. gad·ded, gad·ding, gads
To move about restlessly or with little purpose, especially in search of pleasure or amusement. See Synonyms at wander.

[Middle English gadden, to hurry.]

gad′der n.

gad 2

1. A pointed tool, such as a spike or chisel, used for breaking rock or ore.
2. Archaic A goad, as for prodding cattle.
tr.v. gad·ded, gad·ding, gads
To break up (ore, for example) with a gad.

[Middle English, from Old Norse gaddr.]

Gad 1

In the Bible, a son of Jacob and the forebear of one of the tribes of Israel.

Gad 2

Used to express surprise or dismay.

[Alteration of God.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature ?
"Mrs Musgrove thinks all her servants so steady, that it would be high treason to call it in question; but I am sure, without exaggeration, that her upper house-maid and laundry-maid, instead of being in their business, are gadding about the village, all day long.
For envy is a gadding passion, and walketh the streets, and doth not keep home: Non est curiosus, quin idem sit malevolus.
It makes them vain and forward and fond of gadding."