1 used to describe something that is old and dirty and has been used a lot:
2 (esp. of dogs and cats) having an infectious disease that makes hair fall out and causes areas of rough skin:
He went on to produce this mangy cat out of a bag.
I cannot understand why, if this is such a mangy or stingy operation, it should be regarded as electioneering.
The decreased appetite will result in individuals appear scrawny, mangy, and sickly.
Using a ruse, the children persuade the shopkeeper to sell them the mangy old monkey, and they free their old friend.
In the first numbered encounter, the characters find a spiral staircase in the cave which leads to a mangy, bedraggled gynosphinx.
Obviously intended to be a bright and breezy romantic-comedy thriller, it ends up a mangy old mutt of a movie thanks to a charmless script and disastrous casting decisions.
Little was heard of its medicinal effects apart from some skin disorders that could be cured and the custom of washing mangy dogs and diseased cattle in the water.