EXAMPLES FROM THE WEB FOR DUN
I dun'no' whether he is married or not, but there is a woman livin' there.
The three distinguished characters were a spendthrift, a bailiff, and a dun.
"Da-da-dat is, er—I spec' so—er—I dun'no', ma'm," he stammered.
Flame-colour is a mixture of auburn and dun; dun of white and black; yellow of white and auburn.
I made sure he was going to dun, and that I should have to shuffle.
The object was dun colored, the color of storm clouds on a cold winter's day.
He found that the barn man was indeed looking after the dun in excellent shape.
You seem to forget that the brand on this dun is pretty well known.
He walked his horse slowly, for the dun did not like the idea of the leather tied to its hoofs.
He tickled the dun with his spurs and trotted along the crest of the lava ridge.