Hypertext Webster Gateway: "Duff"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Duff \Duff\, v. t. [imp. & p. p. {Duffed}; p. pr. & vb. n.
{Duffing}.] [Etym. uncertain.] [Colloq. or Slang]
1. To treat or manipulate so as to give a specious appearance
to; to fake; hence, to cheat.
2. In Australia, to alter the brands on (cattle, horses,
etc.); to steal (cattle, etc.), and alter their brands.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Duff \Duff\ (d[u^]f), n. [From OE. dagh. [root]67. See {Dough}.]
1. Dough or paste. [Prov. Eng.] --Halliwell.
2. A stiff flour pudding, boiled in a bag; -- a term used
especially by seamen; as, plum duff.
From WordNet (r) 1.7 (wn)
duff
n : a stiff flour pudding steamed or boiled usually containing
e.g. currents and citron
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