master-piece

plural master-pieces

1. obsoleteObsolete form of masterpiece.

   An invidious, malicious song, replete with the sharpest terms, is, according to them, the master-piece of human wit.

   1785, James Ridgway, A Dictionary of Literary Conversation

   1 more example

   ...She is romantic—clever—needs excitement; and, therefore, flavours her affection with a handsome seasoning of remorse. I shall expect a master-piece from you to-night; till then adieu, and pray feel as much at home with me as I do with you. By the by," added he, turning back from the door, "be sure you fill the paper; women judge of the strength of your attachment by the length of your letters!"

   1837, L[etitia] E[lizabeth] L[andon], Ethel Churchill: Or, The Two Brides. […], volume III, London: Henry Colburn, […], →OCLC, pages 142–143