(duf) v.t.
1. Brit. Colloq. To fix or change so as to give the appearance of truth or right to; to fake or cheat.
—v.i.
2. Austral. To steal cattle or horses, especially in large numbers. [? Back formation from duffer]

(duf) noun
1. A thick flour pudding boiled in a bag.
2. The litter of dead leaves, broken branches, etc., accumulated in a forest.
3. Small or fine coal. [Var. of DOUGH]