noun
- a great work, especially the chief work of a writer or artist: Proust’s magnum opus is Remembrance of Things Past.
noun
- a great work of art or literature, esp the greatest single work of an artist
“masterpiece, a person’s greatest work,” Latin, literally “great work” (see magnum + opus). The most important work in a person’s career, especially in literature, art, or scholarship: “Moby Dick was Melville’s magnum opus.” From Latin, meaning “great work.”