masterpiece
nounUK /ˈmɑːstəpiːs/
US /ˈmæstərpiːs/
A masterpiece is a very special piece of work that someone made really, really well.
The painting in the museum is a famous masterpiece.
OTHER MEANINGS
2. The best piece of work that a person has ever made.
This novel is the author's masterpiece.
3. Something done with great skill.
Her cake was a masterpiece of baking.
4. A great achievement that people admire.
The bridge was a masterpiece of engineering.