(1):
(n.) Dough or paste.
(2):
(v. t.) To treat or manipulate so as to give a specious appearance to; to fake; hence, to cheat.
(3):
(n.) A stiff flour pudding, boiled in a bag; - a term used especially by seamen; as, plum duff.
(4):
(v. t.) In Australia, to alter the brands on (cattle, horses, etc.); to steal (cattle, etc.), and alter their brands.