"A coarse cotton stuff, generally blue, worn by sailors" [Century Dictionary, 1897], 1610s, dongerijns, from Hindi dungri "coarse calico," said to be from the name of a village, now one of the quarters of Bombay. Dungarees "trousers made of dungaree" is by 1868.
dunce
dunderhead
dundrearies
dune
dung
dungaree
dungeon
dunghill
dunk
Dunker
Dunkirk