1. A work of outstanding artistic, literary, or intellectual merit; a supreme example of craftsmanship or creativity
The Mona Lisa is considered one of the greatest masterpieces of the Renaissance.
A Mona Lisa é considerada uma das maiores obras-primas do Renascimento.
2. The most outstanding work produced by an artist, writer, or craftsperson
Many critics argue that this novel is the author's masterpiece.
Muitos críticos argumentam que este romance é a obra-prima do autor.