mas ‧ ter ‧ piece /ˈmɑːstəpiːs $ ˈmæstər-/ BrE AmE noun [countable]
1 . a work of art, a piece of writing or music etc that is of very high quality or that is the best that a particular artist, writer etc has produced SYN masterwork :
Mary Shelley was just 18 when she wrote the horror masterpiece ‘Frankenstein’.
2 . a very good example of something
masterpiece of
The shark is a masterpiece of evolution.