gob (n.) Look up gob at Dictionary.com
"a mouthful, lump," late 14c., probably from Old French gobe "mouthful, lump," related to gober "gulp, swallow down," probably from Gaulish *gobbo- (compare Irish gob "mouth," Gaelic gob "beak"). This Celtic source also seems to be root of gob "mouth" (mid-16c.), which is the first element in gob-stopper "a kind of large hard candy" (1928).