Masterwork definitions

Masterwork

1) Crowning achievement 2) Pinnacle of fine art
Found on https://www.crosswordclues.com/clue/masterwork

---

Masterwork

1) Opus
Found on https://www.crosswordclues.com/clue/masterwork

---

Masterwork

Image also only used for one illustration on the designated article. ...
Found on http://en.wikipedia.org/wiki/Masterwork

---