Where does “gob” come from?

Gob comes from Middle English gabben, from Old Norse gabba, from Proto-Germanic gabbaną, from Proto-Indo-European ghabh-.

gob (English): A lump of soft or sticky material; The mouth;...

Definitions

Step	Language	Word	Meaning
1	Irish	gob	beak, bill; tip, point, projection; pointy nose
2	Old Irish	gop	—
3	Proto-Celtic	gobbos	mouth, muzzle, snout, beak; muzzle, snout;...
4	Proto-Indo-European	ǵebʰ-	jaw, mouth; to eat, chew; branch

gob — Etymology, Origin & Word History | Etymology Explorer