n.1.The master or superintendent of a mint. Also used figuratively.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
The Captain John Hull aforesaid was the mint-master of Massachusetts, and coined all the money that was made there.
When the mint-master had grown very rich, a young man, Samuel Sewall by name, came a-courting to his only daughter.
The mint-master also was pleased with his new Son-in-law; especially as he had courted Miss Betsey out of pure love, and had said nothing at all about her portion.
"Daughter Betsey," said the mint-master, "get into one side of these scales."
The box to which the mint-master pointed was a huge, square, iron-bound, oaken chest; it was big enough, my children, for all four of you to play at hide-and-seek in.