Definition of duffs:
(n) :
(US, slang) The buttocks.
(n) :
Something spurious or fake; a counterfeit; a worthless thing; a defective thing.
(adj) :
(UK) Worthless; not working properly, defective.
(n) :
(baseball, slang) An error.
(n) :
A stiff flour pudding, often with dried fruit, boiled in a cloth bag, or steamed.
(n) :
A pudding-style dessert, especially one made with plums or (in the Bahamas) guavas.