a person's buttocks
I did not get where I am today by sitting on my duff
mishit (a shot)
he duffed the ball short of the green
a flour pudding boiled or steamed in a cloth bag
a currant duff
steal and alter brands on (cattle)
he was complaining to the police that his stock was being duffed
decaying vegetable matter covering the ground under trees
generally the fires in this area burn the duff and underbrush and scorch a few trees