From Old English dāg, from PIE *dʰeyǵʰ- 'to knead' — the same root that gave us fiction and figure via Latin.
A thick mixture of flour and liquid used for baking bread, pastry, or pasta.
From Old English dāg 'dough,' from Proto-Germanic *daigaz 'dough,' from PIE *dʰeyǵʰ- 'to mold, form, knead.' The same root gave Latin fingere 'to shape, form,' making dough a distant cousin of fiction, figure, and feign — all from the idea of shaping or molding. Key roots: *dʰeyǵʰ- (Proto-Indo-European: "to mold, form, knead").