WordReference Random House Unabridged Dictionary of American English © 2020
dandy brush′, 
  • a brush with stiff, short bristles that is used for grooming animals, esp. horses.
    • 1835–45

    Collins Concise English Dictionary © HarperCollins Publishers::
    dandy-brush n
    1. a stiff brush used for grooming a horse
    'dandy brush' also found in these entries (note: many are not synonyms or translations):
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