Source : Webster's Revised Unabridged Dictionary (1913)

Dandiprat \Dan"di*prat\, n. [Dandy + brat child.]
   1. A little fellow; -- in sport or contempt. ``A dandiprat
      hop-thumb.'' --Stanyhurst.

   2. A small coin.

            Henry VII. stamped a small coin called dandiprats.
                                                  --Camden.