The small particles of dirt left on pieces of clothes which only Rose Spires, the Cheer laundress, can see and clean in combination with Cheer. In her words, dingies are:
Dingy is the opposite of clean, love. Its dull, grayish, faded, grimy, grubby, mucky, and just dreadfully dirty
Dingies is Dundee slang used to tell someone that their talking a load of bollocks.
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